Pain Keeper vs Mistress of Hymns

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Pain Keeper	Dark Elves	Void	HP	Rare	HP 21% Place: Crypts
Mistress of Hymns	The Sacred Order	Spirit	Support	Epic	Defence 25% Place: All battles

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Pain Keeper	60	6	19320	969	771	102	15	50	40	0
Mistress of Hymns	60	6	18990 -330	1024 +55	1013 +242	103 +1	15	50	30 -10	0

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
Mistress of Hymns	Bolstering Blow Formula: 4ATK Formula: 0.15DEALT_DMG Attacks 1 enemy. Heals the ally with the lowest HP by 15% of the damage inflicted.	Song of Triumph Formula: 5.7*ATK Attacks 1 enemy. Places a 15% [Continuous Heal] buff on the 2 allies with the lowest HP for 2 turns if this attack is critical. Cooldown: 4 Continuous Heal 15%	Hymn of Rebirth Formula: 0.5*TRG_HP Revives 2 random allies with 50% HP and places a [Veil] buff on them for 1 turn. Cooldown: 6 Veil