Warcaster vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Warcaster	Banner Lords	Void	Support	Epic	Crit rate 23% Place: All battles Element: Void
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Warcaster	60	6	20145	1013	947	106	15	50	30	0
Gravechill Killer	60	6	13545 -6600	1233 +220	892 -55	96 -10	15	50	30	10 +10

Warcaster	Tactical Ace Formula: 4.3*ATK Attacks 1 enemy. Has a 40% chance of stealing 2 random buffs from the target.	Sealing Strike Formula: 4.2*ATK Attacks all enemies. Has a 50% chance of placing a [Block Buffs] debuff for 2 turns. Cooldown: 4 Block Buffs	Invincible Aura Places a [Block Damage] buff on all allies for 1 turn. Cooldown: 6 Block Damage
Gravechill Killer	Freezing Toxin Formula: 3.9*ATK Attacks 1 enemy. Has a 40% chance of placing a 5% [Poison] debuff for 1 turn. Poison 5%	Blood Chill Formula: 6.8*ATK Attacks 1 enemy. Has a 75% chance of placing a 30% [Decrease DEF] debuff for 2 turns. Has a 75% chance of placing a 60% [Decrease DEF] debuff instead if the target is under a [Poison] debuff. Cooldown: 4 Decrease DEF 60% Decrease DEF 30%	Icy Veins Formula: 2.65*ATK Attacks 1 enemy 2 times.Each hit places a 2.5% [Poison] debuff for 2 turns. Places a 5% [Poison] debuff instead if the target is under a [Poison Sensitivity] debuff. Cooldown: 5 Poison 2.5% Poison 5%