Compression

Abbreviation: SC 
Also known as Renkei(連携), which is short for Wazarenkei(技連携).
Most Weapon Skills, Physical Blood Pacts, Physical Blue Magic, and Automaton Weapon Skills are associated with one or more latent Weapon Skill Attributes. When two attacks with the correct Weapon Skill Attributes successfully connect with a target in succession, a powerful surge of energy is released. This surge is called a Skillchain (Japanese: Renkei).
A successful Skillchain deals extra damage to a monster, based on the monster's Resistance to the elements associated with the Skillchain. A Skillchain may also be be used to increase the potency of offensive magic by casting magic of the same elemental alignment to produce a Magic Burst.	
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==Skillchain Basics==
A Skillchain is created by successfully performing Weapon Skills in the correct order. The order of Weapon Skills is determined by the attributes of the Weapon Skill (see Weapon Skill Attributes below). When a Weapon Skill is performed and successfully connects with the target, the target resonates with the Weapon Skill Attributes of the used Weapon Skill for approximately 5 seconds. If the target is then hit with a Weapon Skill Attribute which chains with the resonating Weapon Skill Attributes, a Skillchain is formed.
When performing the neccessary Weapon Skills there is a window of 5 seconds starting 1 second after the previous Weapon Skill in which the following Weapon Skill can be performed. If the following Weapon Skill is performed too soon or too late the Skillchain will not be formed.
If a Weapon Skill is performed which does not chain with the Weapon Skill Attributes the target is resonating with, the resonating Weapon Skill Attributes are replaced by those of the performed Weapon Skill. If the subsequent Weapon Skill has no Weapon Skill Attributes (ex. Spirits Within, Spirit Taker, Energy Steal, Energy Drain, Starlight, Moonlight) or misses entirely, the target will continue to resonate with the previous Weapon Skill's Attributes until another Weapon Skill with Attributes connects, or until time expires. 
The damage performed by a Skillchain is determined by the level of the Skillchain and the damage dealt by the Weapon Skill which completed the Skillchain. For this reason, Thieves and the Sneak Attack ability are ideally suited to closing a Skillchain for large amounts of damage.
==Weapon Skill Attributes==
The basis of a Skillchain involves the attributes associated with each Weapon Skill performed. The correct combination of attributes produces a Skillchain.
There are 14 Weapon Skill attributes in total.
====Level 1 Attributes====
*Image:Light-square.JPG Transfixion
**Associated with the element Light and piercing damage. 
**Found mostly on polearm and ranged weapon skills and Weapon Skills which pierce the target.
*Image:Fire-square.JPG Liquefaction
**Associated with the element Fire and heat-based damage.
**Found on fire-related Weapon Skills.
*Image:Lightning-square.JPG Impaction
**Associated with the element Lightning and blunt damage.
**Found on blunt weaponry's Weapon Skills and Weapon Skills which stun the target.
*Image:Wind-square.JPG Detonation
**Associated with the element Wind and wind damage.
**Typically found on wind-related Weapon Skills.
*Image:Dark-square.JPG Compression
**Associated with the element Dark and darkness damage.
**Typically found on dark-related Weapon Skills.
*Image:Earth-square.JPG Scission
**Associated with the element Earth and slashing damage.
**Found mostly on slashing Weapon Skills which cleave the target.
*Image:Water-square.JPG Reverberation
**Associated with the element Water.
**Found on a variety of weapon skills.
*Image:Ice-square.JPG Induration
**Associated with the element Ice and ice damage.
**Found mostly on ice-related weapon skills.
These are the most common attributes and most Weapon Skills have one or more of these. Each attribute is associated with an element and type of attack or damage.
For example, the Weapon Skill Tachi: Enpi carries the attributes Image:Light-square.JPG Transfixion and Image:Earth-square.JPG Scission. Observing the Weapon Skill in action, it is clear to see that the user performs a slice across the target followed by a piercing blow to the center of the target.
====Level 2 Attributes====
*Image:Light-square.JPGImage:Fire-square.JPG Fusion
**Associated with the elements Light and Fire.
*Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation
**Associated with the elements Lightning and Wind.
*Image:Dark-square.JPGImage:Earth-square.JPG Gravitation
**Associated with the elements Dark and Earth.
*Image:Water-square.JPGImage:Ice-square.JPG Distortion
**Associated with the elements Water and Ice.
Only high-level Weapon Skills carry these attributes. The attributes are not associated with any sort of damage type or weapon skill type.
====Level 3 Attributes====
*Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light
**Associated with the elements Light, Fire, Lightning and Wind.
*Image:Dark-square.JPGImage:Earth-square.JPGImage:Water-square.JPGImage:Ice-square.JPG Darkness
**Associated with the elements Dark, Earth, Water and Ice.
These attributes are only available on the Weapon Skills unique to the Relic Weapons.
==Forming Skillchains==
Skillchains are formed by hitting a target with a correct sequence of Weapon Skill Attributes. The specific sequence required varies between the various Skillchains. Not all sequences produce a Skillchain.
===Level 1 Skillchains===
A Level 1 Skillchain can do up to 50% of the damage of the closing Weapon Skill, depending on the target's Resistance to the Skillchain element.
Level 1 Skillchains are comprised of a single element and correspond to the Level 1 Weapon Skill Attributes. Each Skillchain is the same as the closing Weapon Skill Attribute that is used to form the Skillchain.
For example, hitting a target resonating with the Image:Dark-square.JPG Compression attribute, with a Weapon Skill possessing the Image:Light-square.JPG Transfixion attribute, will produce a Image:Light-square.JPG Transfixion skillchain, which is aligned to the element Light.	
{| cellspacing="3" style="border: solid 1px #C17900; background:#FFEFD5;" |	Image:Dark-square.JPG Compression 	→	Image:Light-square.JPG Transfixion 	=	Image:Light-square.JPG Transfixion
Image:Lightning-square.JPG Impaction	→	Image:Fire-square.JPG Liquefaction 	= 	Image:Fire-square.JPG Liquefaction 	 	
Image:Earth-square.JPG Scission 	→	Image:Fire-square.JPG Liquefaction 	= 	Image:Fire-square.JPG Liquefaction 	 	
Image:Water-square.JPG Reverberation	→	Image:Lightning-square.JPG Impaction	= 	Image:Lightning-square.JPG Impaction	 	
Image:Ice-square.JPG Induration 	→	Image:Lightning-square.JPG Impaction	= 	Image:Lightning-square.JPG Impaction	 	
Image:Lightning-square.JPG Impaction	→	Image:Wind-square.JPG Detonation 	= 	Image:Wind-square.JPG Detonation 	 	
Image:Dark-square.JPG Compression 	→	Image:Wind-square.JPG Detonation 	= 	Image:Wind-square.JPG Detonation 	 	
Image:Earth-square.JPG Scission 	→	Image:Wind-square.JPG Detonation 	= 	Image:Wind-square.JPG Detonation 	 	
Image:Light-square.JPG Transfixion 	→	Image:Dark-square.JPG Compression 	= 	Image:Dark-square.JPG Compression 	 	
Image:Ice-square.JPG Induration 	→	Image:Dark-square.JPG Compression 	= 	Image:Dark-square.JPG Compression 	 	
Image:Fire-square.JPG Liquefaction 	→	Image:Earth-square.JPG Scission 	= 	Image:Earth-square.JPG Scission 	 	
Image:Wind-square.JPGDetonation 	→	Image:Earth-square.JPGScission 	= 	Image:Earth-square.JPG Scission 	 	
Image:Light-square.JPG Transfixion 	→	Image:Water-square.JPG Reverberation	= 	Image:Water-square.JPG Reverberation	 	
Image:Earth-square.JPG Scission 	→	Image:Water-square.JPG Reverberation	= 	Image:Water-square.JPG Reverberation	 	
Image:Water-square.JPG Reverberation	→	Image:Ice-square.JPG Induration 	= 	Image:Ice-square.JPG Induration 	 	
===Level 2 Skill Chains===
A Level 2 Skillchain can do up to 60% of the damage of the closing Weapon Skill, depending on the target's Resistance to the Skillchain elements.
Level 2 Skillchains are comprised of two elements and correspond to the Level 2 Weapon Skill Attributes. The Skillchain is not neccessarily the same as the closing Weapon Skill Attribute that is used to form the Skillchain.
Level 2 Skillchains can be formed by a combination of Level 1 Weapon Skill Attributes or a combination of Level 2 Weapon Skill Attributes. Primarily they are formed using the Lv.1 attributes since these are available at much lower levels than the Lv.2 attributes.
For example, hitting a targeting resonating with the Image:Light-square.JPG Transfixion attribute, with a Weapon Skill possessing the Image:Earth-square.JPG Scission attribute, will produce a Image:Water-square.JPGImage:Ice-square.JPG Distortion Skillchain, which is aligned to the elements Water and Ice.	
{| cellspacing="3" style="border: solid 1px #C17900; background:#FFEFD5;" |	Image:Fire-square.JPG Liquefaction 	→	Image:Lightning-square.JPG Impaction 	=	Image:Light-square.JPGImage:Fire-square.JPG Fusion
Image:Water-square.JPGImage:Ice-square.JPG Distortion 	→	Image:Light-square.JPGImage:Fire-square.JPG Fusion 	= 	Image:Light-square.JPGImage:Fire-square.JPG Fusion 	 	
Image:Ice-square.JPG Induration 	→	Image:Water-square.JPG Reverberation 	= 	Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation	 	
Image:Dark-square.JPGImage:Earth-square.JPG Gravitation 	→	Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation	= 	Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation	 	
Image:Wind-square.JPG Detonation 	→	Image:Dark-square.JPG Compression 	= 	Image:Dark-square.JPGImage:Earth-square.JPG Gravitation 	 	
Image:Light-square.JPGImage:Fire-square.JPG Fusion 	→	Image:Dark-square.JPGImage:Earth-square.JPG Gravitation 	= 	Image:Dark-square.JPGImage:Earth-square.JPG Gravitation 	 	
Image:Light-square.JPG Transfixion 	→	Image:Earth-square.JPG Scission 	= 	Image:Water-square.JPGImage:Ice-square.JPG Distortion 	 	
Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation	→	Image:Water-square.JPGImage:Ice-square.JPG Distortion 	= 	Image:Water-square.JPGImage:Ice-square.JPG Distortion 	 	
===Level 3 Skill Chains===
A Level 3 Skillchain can do up to 100% of the damage of the closing Weapon Skill, depending on the target's Resistance to the Skillchain elements.
Level 3 Skillchains are comprised of four elements and correspond to Level 3 Weapon Skill Attributes.
Level 3 Skillchains are formed from Level 2 and Level 3 Weapon Skill Attributes. Because of these requirements, they can only be performed on high-level characters. Lv.3 attributes are exclusive to Weapon Skills found only on Relic Weapons. This rarity means that Lv.3 Skillchains are typically produced using Lv.2 attributes.
Unlike Level 2 and Level 1 Skillchains, 'Level 3 Skillchains do not require the Weapon Skill Attributes to be combined in a specific order. This leads to additional flexibility when creating Lv.3 Skillchains and makes it easier to ensure a hard-hitting job closes the chain for maximum potential damage.
For example, hitting a targeting resonating with the Image:Light-square.JPGImage:Fire-square.JPG Fusion attribute, with a Weapon Skill possessing the Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation attribute, will produce a Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light Skillchain, which is aligned to the elements Light, Fire, Lightning and Wind.	
{| cellspacing="3" style="border: solid 1px #C17900; background:#FFEFD5;" |	Image:Light-square.JPGImage:Fire-square.JPG Fusion 	+	Image:Lightning-square.JPGImage:Wind-square.JPG Fragmentation 	=	Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light
Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light	+	Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light	=	Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light	 	
Image:Dark-square.JPGImage:Earth-square.JPG Gravitation 	+	Image:Water-square.JPGImage:Ice-square.JPG Distortion 	=	Image:Dark-square.JPGImage:Earth-square.JPGImage:Water-square.JPGImage:Ice-square.JPG Darkness 	 	
Image:Dark-square.JPGImage:Earth-square.JPGImage:Water-square.JPGImage:Ice-square.JPG Darkness 	+	Image:Dark-square.JPGImage:Earth-square.JPGImage:Water-square.JPGImage:Ice-square.JPG Darkness 	=	Image:Dark-square.JPGImage:Earth-square.JPGImage:Water-square.JPGImage:Ice-square.JPG Darkness 	 	
===Linked Skillchains===
A Skillchain in it's simplest form comprises of two Weapon Skills performed one after the other to generate the required Skillchain. The first Weapon Skill causes the target to resonate with the attributes of the Weapon Skill. The second Weapon Skill's attributes interact with the ones resonating on the target to produce the Skillchain.
Beyond this basic concept, the idea of Weapon Skill attributes can be applied to the Skillchain itself. Each Skillchain causes the target to resonate with the same attributes as the Skillchain. This means that a third Weapon Skill can follow the initial two, acting on the Skillchain they produced.
For example, a Monk can use Spinning Attack to make the target resonate with Image:Fire-square.JPG Liquefaction and Image:Lightning-square.JPG Impaction. A second Monk follows this attack with Howling Fist, creating a Image:Light-square.JPGImage:Fire-square.JPG Fusion Skillchain. A Dark Knight then continues this by using Spinning Slash to create a Image:Light-square.JPGImage:Fire-square.JPGImage:Lightning-square.JPGImage:Wind-square.JPG Light Skillchain.
Linking Skillchains increases their potential damage. The damage potential is based off the closing Weapon Skill. Damage increases with the number of Skillchains performed in succession as follows:
Skillchain Level	Maximum Damage Potential	Maximum Damage Potential	Maximum Damage Potential	Maximum Damage Potential	Maximum Damage Potential
Skillchain Level	2 Skills 	3 Skills 	4 Skills 	5 Skills 	6 Skills
Level 1 	50% 	60% 	70% 	80% 	90%
Level 2 	60% 	75% 	100% 	125% 	150%
Level 3 	100% 	150% 	175% 	200% 	225%
All Weapon Skill Attributes can be used to create a Skillchain except Level 3 attributes from a Relic Weapons Weapon Skill (e.g. Scourge). These powerful Weapon Skills may be used to create a Level 3 Skillchain by immediately following a Level 3 Weapon Skill attribute (either from a Lv.2 created Skillchain or another Relic Weapon), however no futher Skillchain may be created from the subsequent Skillchain.
There is no limit to the number of Level 1 and Level 2 Weapon Skill Attributes which can be used in linked succession to create increasingly more powerful Skillchains.
==List of Weapon Skills and Abilities With Weapon Skill Attributes==
You can find this same information in a different layout on the Weapon Skill Elemental Attributes page.
You will notice that many weapon skills have 2 or more attributes associated with them. The attributes are listed by priority using "A," "B," or "C" notation, where "A" is the highest and "C" is the lowest. If a situation arises where a Skillchain can be formed using both "A" and "B" attributes, a Skillchain will be formed using the "A" attribute. The attribute with highest priority is always chosen when multiple Skillchain possibilities are presented. If "C" is not listed on the table that means there is no "C" attricute.
;Blood Pacts:The level listed for the Blood Pacts is not the same as the levels for Weapon Skills. It is the level that the Summoner job needs to be in order to use the Blood Pact. So if the level listed is 21, that means the summoner needs to be level 21 in order to use that ability. 
;Blue Magic:In order to make a Skillchain using Blue Magic, the Chain Affinity ability must be used.
;Automatons:The Weapon Skills an automaton can use is dependant on the frame it is using. An automaton equipped with the Harlequin Frame or the Stormwaker Frame can only use Slapstick and Knockout. An automaton equipped with the Valoredge Frame can only use Chimera Ripper, String Clipper, and Cannibal Blade. An automaton equipped with the Sharpshot Frame can only use Arcuballista and Daze.
Axe | G. Axe | Archery | Club | Dagger | Hand-to-Hand | Katana | G. Katana | Marksmanship
Polearm | Scythe | Staff | Sword | G. Sword | Blue Magic | Automatons | Bloodpacts
;Axe
{|border="1" cellpadding="1" cellspacing="0" width="100%" style="background:#FFEFD5;"	Level: WS	A	B
10: Raging Axe
40: Smash Axe
70: Gale Axe
100: Avalanche Axe
150: Spinning Axe
175: Rampage
200: Calamity
225: Mistral Axe
240: Decimation<Br>
Relic: Onslaught<Br>	
Detonation
Induration
Detonation
Scission
Liquefaction
Scission
Scission
Fusion
Fusion
Darkness	
Impaction
Reverberation
-
Impaction
Scission
-
Impaction
-
Reverberation
Gravitation	
== Using a Skillchain Chart ==
With the exception of Level 3 Skillchains, there is no obvious pattern to the network of attributes that are "compatible" and form Level 1 or Level 2 Skillchains. When presented with a party using various weapons, it is often easiest to examine a Skillchain Chart to determine which Skillchains are available to use.
A Skillchain Chart presents Skillchains as a map of which Weapon Skills lead to which effect. By examining the available Weapon Skills and plotting a route across the map, Skillchains can be easily created and linked together.
Say there are two, one-handed sword wielders, and they both have Fast Blade and Burning Blade. Now find the Weapon Skill on the Skill Chain Chart. Burning Blade is in the Fire section; and Fast Blade is in the Earth section. There is one arrow connecting them. Notice that the arrow is double ended. This means that you can start in the Earth section and go to the Fire section, or you may start in the Fire section and go to the Earth section. Both ways will result in a Skill Chain. If you start in Fire section and go to Earth you get an Earth Scission Skill Chain. Going the other way (Earth first followed by Fire) you get a Fire Liquefaction Skill Chain.
 
You will notice that many weapon skills have 2 or more attributes associated with them. The attributes are listed by priority using "A," "B," or "C" notation, where "A" is the highest and "C" is the lowest. If a situation arises where a Skillchain can be formed using both "A" and "B" attributes, a Skillchain will be formed using the "A" attribute. The attribute with highest priority is always chosen when multiple Skillchain possibilities are presented.
==See Also==
* Magic Burst
* Role of the Elements
* Skillchain Effects
* Blue Renkei
* Cosmic Elucidation
* Weapon Skill Points
* Skillchain Guide by Elfi Wolfe
==Links==
* Aden's Renkei Chart
* Rixie's Skillchain Guide
* AlexisLucia's Skillchain Calculator
* Revelin's FFXI Calculator
* Valkurm Skill Chain Chart
Category:GuidesCategory:Featured Articles*From FFXIclopedia, a Wikia wiki.