Walking Tomb Dreng vs Pain Keeper

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Walking Tomb Dreng	Knight Revenant	Spirit	HP	Legendary	HP 30% 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
Walking Tomb Dreng	60	6	23130	870	1167	99	15	57	50	0
Pain Keeper	60	6	19320 -3810	969 +99	771 -396	102 +3	15	50 -7	40 -10	0

Walking Tomb Dreng	Corpsefire Formula: 0.11*HP Attacks 1 enemy 2 times. Instantly activates any [HP Burn] debuffs on the target after attacking.	Exalted Pyre Formula: 0.23*HP Attacks all enemies. Has a 75% chance of placing a [HP Burn] debuff on all enemies for 2 turns. This debuff cannot be resisted. Cooldown: 4 HP Burn	Death's Balance Formula: 0.35HP Formula: 0.35HP Equalizes the HP of all allies, then attacks 1 enemy. The HP levels of all allies will be brought up to the level of the ally with the highest HP. The attack will ignore 30% of the target's DEF if the target's current HP is equal to or lower than this Champion's current HP. Will decrease the cooldown of the Exalted Pyre skill by 1 turn if the target's current HP is higher than this Champion's current HP. Cooldown: 5	Fortress [P] Formula: 0.30DEALT_DMG Formula: 0.3DMG_MUL Reflects 30% of the damage this Champion receives back to the attacker if this Champion has 50% HP or more. Deals 30% more damage instead if this Champion has less than 50% HP.
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	-