Corpse Collector vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Corpse Collector	Undead Hordes	Force	Support	Epic	Accuracy 40 Place: Arena
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Corpse Collector	60	6	17175	1167	991	106	15	50	30	0
Gravechill Killer	60	6	13545 -3630	1233 +66	892 -99	96 -10	15	50	30	10 +10

Corpse Collector	Insidious Parasite Formula: 3.6*ATK Attacks 1 enemy. Has a 40% chance of placing a [Leech] debuff for 2 turns. Leech	Hailfire Formula: 2.5*ATK Attacks all enemies. Has a 75% chance of placing a 100% [Heal Reduction] debuff and a 50% [Decrease ACC] debuff on all enemies for 2 turns. Cooldown: 4 Decrease ACC 50% Heal Reduction 100%	Noxious Escape Formula: 1.65*ATK Attacks 3 times at random. Each hit has a 75% chance of placing a 5% [Poison] debuff for 2 turns. Places a [Veil] buff on this Champion for 1 turn. Cooldown: 5 Veil Poison 5%
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%