Metalshaper vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Metalshaper	Lizardmen	Spirit	Support	Rare	Defence 15% Place: Crypts
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Metalshaper	60	6	16350	859	1079	90	15	57	30	0
Gravechill Killer	60	6	13545 -2805	1233 +374	892 -187	96 +6	15	50 -7	30	10 +10

Metalshaper	Transference Bolt Formula: 4*DEF Attacks 1 enemy. Has a 30% chance of stealing 1 random buff from the target.	Fortified Steel Places a [Shield] buff on all allies for 2 turns. The value of the [Shield] is proportional to this Champion Level. Cooldown: 3 Shield	Rescue Formula: 0.2*HP Removes all debuffs from the ally with the lowest HP, then heals them by 20% of this Champion's MAX HP. Also places a 25% [Increase DEF] buff on that ally for 3 turns. Cooldown: 5 Increase DEF 30%
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%