Rakka Viletide vs Corvis the Corruptor

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Rakka Viletide	Orcs	Void	Support	Legendary	Speed 19% Place: All battles
Corvis the Corruptor	The Sacred Order	Magic	Defence	Legendary	Defence 30% Place: All battles

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Rakka Viletide	60	6	19650	1134	1134	109	15	50	40	0
Corvis the Corruptor	60	6	19155 -495	903 -231	1398 +264	99 -10	15	50	40	20 +20

Rakka Viletide	Oozing Blessing Removes all debuffs from all allies, then places a 50% [Increase ATK] buff and a [Shield] buff equal to 25% of this Champion’s MAX HP on all allies for 2 turns. Cooldown: 4 Shield Increase ATK 50%	-	-	-
Corvis the Corruptor	Reductive Process Formula: 3.1*DEF Attacks 1 enemy. Has a 40% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Decrease ATK 50%	Medical Miracle Formula: 1.9DEF Formula: 1.9DEF Attacks all enemies 2 times. The first hit increases the duration of all enemy debuffs by 1 turn. The second hit increases the duration of all ally buffs by 1 turn. Cooldown: 4	Field Research Formula: 2DEF Formula: 2DEF Attacks all enemies 2 times. Each hit has a 75% chance of placing two 5% [Poison] debuffs for 2 turns. After attacking, places a 25% [Poison Sensitivity] debuff on enemies under 2 or more [Poison] debuffs. Cooldown: 5 Poison Sensitivity Poison 5%	Curious Draught [P] Formula: (EffectsAppliedOnTargetCountOfKind(ContinuousDamage_KindId)<5)(-0.05DMG_MUL)EffectsAppliedOnTargetCountOfKind(ContinuousDamage_KindId)+(EffectsAppliedOnTargetCountOfKind(ContinuousDamage_KindId)>=5)(-0.25*DMG_MUL) Decreases the damage enemies under [Poison] debuffs inflict (5% less damage per [Poison] debuff, stacks up to 25%).