Blast

Blast is an Elemental Synergy that is activated through the use of Dual Brave Burst. A bond pair with this Elemental Synergy requires one Fire unit and one Thunder unit.
Unlike other Elemental Synergies, any DBB with the Blast synergy (along with Prism) can only be used if the selected enemy target is below a certain HP threshold. If no target is selected, targeting will default to the enemy with the lowest HP percentage.
When a DBB with Blast synergy is used, the caster of the DBB deals fixed proportional damage to the targeted enemy. Following this, Blast will revive all currently KO'd units as long as they are not affected by Doom or had died as a result of Prism. For the next few turns after activating Blast, all units will become invincible, followed by permanent death at the end of the buff duration. Units that die as a result of Blast cannot revive until the current battle ends or the quest finishes.
While invincible, all units have their healing efficacy drastically reduced to 0, receive 0 damage from all forms of damage, and are unaffected by Instant Death and death from Doom. Additionally, DBB cannot be activated for the duration of the invincibility.
DBBEffect_Blast_AnnetteSilvie.png|Annette and Silvie using their DBB, Deaf to All.
==Interactions in Summoners' Research Lab==
In Strategy Zone, a unit with Final Charge that is swapped out will not die upon buff expiration.
==Interactions with Enrage==
If units are still alive following an enemy skill with Enrage mechanics, the enemy skill will be used every turn.
For example, if the player's squad survives Teresa's Final Commandment skill from The Fighting Nun dungeon, Teresa will use Final Commandment every turn.
==Effect Potencies==
Bond Level	Potency	Duration
1 	Piercing Proportional Damage: Deals 2% HP as damage
 Final Charge: Applies Invincibility but becomes KO'd permanently upon expiry Enemy %HP Threshold Requirement: < 20% HP	4 turns Permanent
2 	Piercing Proportional Damage: Deals 3% HP as damage
 Final Charge: Applies Invincibility but becomes KO'd permanently upon expiry Enemy %HP Threshold Requirement: < 25% HP	4 turns Permanent
3~4 	Piercing Proportional Damage: Deals 4% HP as damage
 Final Charge: Applies Invincibility but becomes KO'd permanently upon expiry Enemy %HP Threshold Requirement: < 30% HP	4 turns Permanent
5 	Piercing Proportional Damage: Deals 5% HP as damage
 Final Charge: Applies Invincibility but becomes KO'd permanently upon expiry Enemy %HP Threshold Requirement: < 35% HP	4 turns Permanent
6~10 	Piercing Proportional Damage: Deals 5% HP as damage
 Final Charge: Applies Invincibility but becomes KO'd permanently upon expiry Enemy %HP Threshold Requirement: < 35% HP	6 turns Permanent
==Synergy Progression Requirements==
Bond Level	Requirements
2 	Thunder Golem x1 Fire Golem x1
3 	Thunder Golem x2 Fire Golem x1
4 	Greater Thunder Golem x1 Fire Golem x3
5 	Greater Fire Golem x1 Geminus Tome x25 Fulgur Shard x300
6 	Grand Fire Golem x1 Geminus Tome x35 Fulgur Shard x500
==List of Units with Elemental Synergy: Blast==
Unit	Partner	Dual Brave Burst
==Changes==
Date 	Description
March 4, 2020(Version 2.11.0)	
*Blast was buffed.
**Blast no longer reduces max HP to 1.