Skill Upgrades

Every champion has 3-4 skills, including their basic attack. The total number of upgradable skill levels per champion ranges from 6-28. Skill upgrades typically increase the damage dealt, reduce the cooldown time, or increase the duration of its buff/debuff.
To level up a skill, a duplicate of the champion or Tutor Fuzzlepuff must be used while training or promoting. The duplicate can be of a different element, star or level. The skill that gets upgraded is picked randomly from the skills that still have upgrades available. Using multiple duplicates together does not increase/decrease the chance of upgrading a more desirable skill. Upgrades are mutually exclusive of each other.
==Tutor Fuzzlepuff==
	
The Tutor Fuzzlepuff is a wildcard that can serve as a duplicate for any champion. 
It is recommended to reserve it for Nat5 champions (starts at 5* when summoned), as it is not realistically possible to get that many duplicates of the Nat5.
Availability: PvP shop, Event shops, Ultimate Blitz
==Number of skill upgrades available by champion==
Champion 	Stars	Fire	Water	Nature	Light	Dark
Archangel 	5 	15 	15 	15 	15 	15
Astromancer 	3, 4 	17 	17 	17 	17 	17
Basilisk 	3, 4 	12 	12 	12 	12 	12
Bee 	1 	12 	12 	 	12 	12
Blademaster 	5 	15 	15 	15 	15 	15
Bomber 	3, 4 	16 	17 	16 	17 	16
Boon Sister 	3 	17 	17 	16 	16 	16
Bounty Hunter 	3 	20 	19 	19 	20 	17
Candy Munchkin 	3, 4 	17 	17 	17 	17 	17
Cleric 	4 	15 	15 	15 	15 	15
Crow Hag 	3 	18 	18 	18 	18 	18
Crystal Priest 	2 	11 	11 	11 	11 	11
Derby Girl 	3 	15 	16 	16 	16 	15
Devil 	1, 2 	13 	13 	13 	 	13
Dino Kid 	5 	17 	17 	18 	17 	18
Diva 	5 	16 	16 	15 	 	17
Doom Herald 	5 	 	 	 	 	
Dozer 	2 	12 	14 	12 	 	
Dragon Guard 	2,3 	16 	16 	16 	 	16
Dreadblade 	5 	 	 	 	 	28
Dryad 	2, 3 	14 	14 	12 	14 	14
Elemental 	2 	13 	13 	13 	 	13
Esper 	4 	16 	17 	16 	16 	17
Fairy 	3, 4 	17 	17 	17 	17 	17
Fox Assassin 	3 	14 	14 	14 	14 	14
Fragmantis 	1 	9 	 	9 	 	
Gunmage 	5 	16 	17 	16 	- 	-
Golem 	2, 3 	18 	17 	19 	17 	18
Greater Demon 	5 	13 	13 	13 	13 	13
Grublin Ruffian 	2 	16 	16 	14 	 	
Grublin Shaman 	1, 2 	9 	12 	12 	12 	15
Grublin Slinger 	2 	14 	14 	14 	 	
Harpy 	2 	14 	14 	17 	16 	15
Imp 	2 	13 	13 	14 	13 	14
Ink Ninja 	5 	12 	12 	12 	 	12
Kyo Kusanagi 	4 	16 	16 	15 	16 	14
Lizardkin 	1, 2 	13 	14 	13 	 	
Magical Girl 	3, 4 	18 	17 	17 	18 	18
Mai Shiranui 	5 	15 	 	15 	15 	15
Mercenary 	3 	15 	14 	16 	16 	14
Monkey King 	5 	14 	14 	14 	 	
Mushroom 	1 	9 	9 	9 	 	
Naga 	4 	15 	15 	15 	15 	15
Pirate 	4 	16 	16 	16 	16 	16
Psion 	4 	15 	15 	15 	15 	15
Queen Bee 	4 	9 	8 	8 	8 	9
Ranger 	3 	16 	13 	14 	13 	16
Rascal 	1, 2 	15 	13 	15 	13 	
Scourge Berserker	3 	28 	28 	28 	28 	28
Sentinel 	2, 3 	19 	19 	14 	19 	
Serpent 	1, 2 	6 	6 	6 	 	
Shark 	2, 3 	13 	13 	13 	13 	13
Siege Tower 	5 	13 	13 	13 	 	
Skand Berserker 	3 	18 	16 	17 	17 	17
Skand Deathmonger	5 	13 	13 	13 	 	13
Skand Warlord 	4 	15 	15 	15 	15 	15
Slime 	1 	6 	6 	6 	 	
Snake Lady 	4 	12 	12 	12 	12 	12
Sniper 	5 	13 	13 	13 	13 	
Spearman 	3, 4 	13 	13 	13 	13 	13
Squire 	2 	12 	12 	14 	10 	12
Technician 	4 	15 	15 	15 	15 	15
Tiki Warrior 	3, 4 	13 	13 	13 	13 	13
Time Keeper 	3, 4 	16 	16 	16 	15 	16
Valkyrie 	3 	18 	18 	18 	18 	17
Vampire 	5 	16 	16 	16 	16 	
Vampire Hunter 	5 	16 	16 	16 	16 	
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