Wagonbane vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Wagonbane	Ogryn Tribes	Magic	Support	Rare	-
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Wagonbane	60	6	17175	947	936	97	15	50	30	10
Gravechill Killer	60	6	13545 -3630	1233 +286	892 -44	96 -1	15	50	30	10

Wagonbane	Eye Blight Formula: 4.2*ATK Attacks 1 enemy. Has a 35% chance of placing a 50% [Decrease ACC] debuff for 2 turns. Decrease ACC 50%	Hackgore Magic Formula: 5.5*ATK Attacks 1 enemy. Places a 7.5% [Continuous Heal] buff on the ally with the lowest HP for 2 turns. Cooldown: 4 Continuous Heal 7.5%	Start The Mayhem Formula: 6ATK Formula: 0.15MAX_STAMINA Attacks 1 enemy. Has a 75% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Also has a 75% chance of decreasing the target's Turn Meter by 15%. Cooldown: 5 Decrease DEF 60%
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%