Sunken Sentinel vs Retainer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Sunken Sentinel	Argonites	Void	Attack	Rare	Attack 15% Place: All battles
Retainer	Dark Elves	Void	Defence	Rare	Defence 19% Place: Crypts

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Sunken Sentinel	60	6	12390	1277	925	95	15	57	30	0
Retainer	60	6	16185 +3795	672 -605	1277 +352	93 -2	15	50 -7	40 +10	0

Sunken Sentinel	Restorative Slash Formula: 3.7ATK Formula: 3.7ATK Attacks 1 enemy. Places an extra hit if the target is under a [Decrease DEF] debuff.	Sunken Swords Formula: 3.9ATK Formula: (relationChance+0.05aliveAlliesCount)/relationChance Attacks all enemies. Has a 50% chance of placing a 60% [Decrease DEF] debuff for 2 turns. The chance increases by 5% for each alive ally. Cooldown: 5 Decrease DEF 60%	Defender of Agaris Formula: 6ATK Formula: 0.2DEALT_DMG Formula: 0.3DEALT_DMG Formula: 0.2DEALT_DMG Formula: 0.3*DEALT_DMG Attacks 1 enemy. Heals this Champion by 20% of the damage inflicted. Heals this Champion by 30% instead if the target is under a [Decrease DEF] debuff. Destroys the target's MAX HP by 20% of the damage inflicted. Destroys the target's MAX HP by 30% instead if the target is under a [Decrease DEF] debuff. Cooldown: 4
Retainer	Sundering Chop Formula: 3.2*DEF Attacks 1 enemy. Has a 40% chance of placing a 30% [Decrease DEF] debuff for 2 turns. Decrease DEF 30%	Resolute Stance Formula: 0.4*HP Heals this Champion by 40% of their MAX HP and places a [Counterattack] buff on this Champion for 2 turns. Cooldown: 4 Counterattack	Hypnotize Formula: 4.7DEF Formula: 0.5MAX_STAMINA Attacks 1 enemy. Decreases the target's Turn Meter by 50%. If the target's Turn Meter is fully depleted, places a [Sleep] debuff on them for 1 turn. Cooldown: 5 Sleep