Sentinel vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Sentinel	Barbarians	Force	HP	Rare	Resist 30 Place: Crypts
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Sentinel	60	6	18825	914	859	86	15	50	30	10
Gravechill Killer	60	6	13545 -5280	1233 +319	892 +33	96 +10	15	50	30	10

Sentinel	Hook Formula: 2.6ATK+2DEF Attacks 1 enemy. Has a 60% chance of placing a [Provoke] debuff for 1 turn if this attack is critical. Provoke	Glaive Swing Formula: 4.4*ATK Attacks all enemies. Has a 50% chance of placing a 25% [Decrease ATK] debuff for 2 turns. Has a 50% chance of placing a 100% [Heal Reduction] debuff for 2 turns. Cooldown: 4 Decrease ATK 25% Heal Reduction 100%	Regeneration [P] Formula: 0.1*HP Heals this Champion by 10% HP at the start of their turn. This Heal can be critical. Cooldown: 2
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%