Coffin Smasher vs Pain Keeper

Overall comparison

HERO	Fraction	Element	Type	Rarity
Coffin Smasher	Knight Revenant	Magic	HP	Rare
Pain Keeper	Dark Elves	Void	HP	Rare

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Coffin Smasher	60	6	21135	683	936	92	15	50	40	0
Pain Keeper	60	6	19320 -1815	969 +286	771 -165	102 +10	15	50	40	0

Coffin Smasher	Mallet Crescendo Formula: 0.06*HP Attacks 1 enemy 3 times. Each hit has a 15% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Decrease ATK 50%	Tombfire Formula: 0.22*HP Attacks 1 enemy. Has a 50% chance of placing a [HP Burn] debuff for 2 turns. Cooldown: 4 HP Burn	Gloom Mist [P] Formula: -0.05*DMG_MUL Decreases the damage enemies inflict with AoE attacks by 5%.
Pain Keeper	Unflagging Advance Formula: DEF+ATK Formula: 0.1*MAX_STAMINA Attacks 1 enemy 2 times. Fills this Champion's Turn Meter by 10%.	Spectacular Sweep Formula: 0.12HP+2ATK Formula: 0.15*HP Attacks all enemies, then heals all allies by 15% of this Champion's MAX HP. Cooldown: 5	Combat Tactics Decreases the cooldowns of all ally skills by 1 turn. Cooldown: 7