Ursuga Warcaller vs Pain Keeper

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Ursuga Warcaller	Barbarians	Void	HP	Legendary	HP 33% Place: All battles
Pain Keeper	Dark Elves	Void	HP	Rare	HP 21% Place: Crypts

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Ursuga Warcaller	60	6	23460	485	1531	108	15	50	50	0
Pain Keeper	60	6	19320 -4140	969 +484	771 -760	102 -6	15	50	40 -10	0

Ursuga Warcaller	Gigantic Cudgel Formula: 0.23*HP Attacks 1 enemy. Has a 45% chance of placing a [Block Active Skills] debuff for 1 turn. Block Cooldown Skills	Barrel Through Formula: 0.23*HP Attacks all enemies. Places a 25% [Decrease C. DMG] debuff and a 50% [Decrease ATK] debuff for 2 turns on targets whose ATK is higher than their DEF. Places a 30% [Decrease SPD] debuff and a 60% [Decrease DEF] debuff for 2 turns on targets whose ATK is equal to or lower than their DEF. Cooldown: 5 Decrease C. DMG Decrease SPD 30% Decrease DEF 60% Decrease ATK 50%	Bottoms Up Places a 50% [Ally Protection] buff on all allies except this Champion for 3 turns. Places a 25% [Strengthen] buff on this Champion for 3 turns. Cooldown: 5 Ally Protection 50% Strengthen	Golden Guard [P] Decreases the damage all allies receive from critical hits by 30%. This Champion will receive that damage instead.
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	-