Rocktooth vs Gravechill Killer

Overall comparison

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

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Rocktooth	60	6	15525	1211	782	101	15	57	30	0
Gravechill Killer	60	6	13545 -1980	1233 +22	892 +110	96 -5	15	50 -7	30	10 +10

Rocktooth	Grab Formula: 3.2ATK Formula: 3.2ATK Attacks 1 enemy. Places an extra hit if this attack is critical.	Stomp Formula: 3.2*ATK Attacks all enemies. Places a 15% [Increase C. RATE] buff on all allies for 1 turn. Cooldown: 3 Increase C. RATE 15%	Rabble Formula: 5.2*ATK Attacks 1 enemy. Places a 100% [Heal Reduction] debuff for 2 turns. Cooldown: 5 Heal Reduction 100%
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%