Suiren vs Pain Keeper

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Suiren	Shadowkin	Force	Attack	Epic	Accuracy 60 Place: Dungeons
Pain Keeper	Dark Elves	Void	HP	Rare	HP 21% Place: Crypts

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Suiren	60	6	14370	1310	1035	99	15	50	30	15
Pain Keeper	60	6	19320 +4950	969 -341	771 -264	102 +3	15	50	40 +10	0 -15

Suiren	Lotus Kiss Formula: 2.2*ATK Attacks 1 enemy 2 times. Each hit has a 40% chance of placing a 5% [Poison] debuff for 2 turns. Poison 5%	Downsize Formula: 3.1*ATK Attacks 1 enemy 2 times. Each hit has a 60% chance of placing a 25% [Weaken] debuff for 2 turns. Cooldown: 3 Weaken 25%	Confusion Reigns Formula: 4*ATK Attacks all enemies. Has a 60% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Cooldown: 4 Decrease DEF 60%
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. This skill can have its cooldown reduced by other skills that reduce cooldowns by 1 turn. Cooldown: 7