Narma the Returned vs Heartpiercer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Narma the Returned	Knight Revenant	Magic	Support	Legendary	Accuracy 80 Place: Dungeons
Heartpiercer	Dark Elves	Force	Attack	Uncommon	-

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Narma the Returned	60	6	19815	1002	1255	105	15	50	30	20
Heartpiercer	60	6	12555 -7260	1057 +55	859 -396	89 -16	15	50	30	0 -20

Skills comparison

Narma the Returned	Hell Crescent Formula: 4.9*ATK Attacks 1 enemy. Has a 50% chance of increasing the duration of all debuffs on the target by 1 turn.	Weirding Dance Formula: 6.5ATK Formula: 0.25HP Attacks 1 enemy. Has a 75% chance of placing a 50% [Decrease ATK] debuff for 3 turns. Also has a 75% chance of placing a [Leech] debuff on all enemies for 2 turns. Then instantly activates all [Poison] debuffs on all enemies. Heals all allies by 25% of this Champion's MAX HP. Cooldown: 5 Leech Decrease ATK 50%	Toxin Trance Formula: 6.8*ATK Attacks 1 enemy. Has a 75% chance of placing three 5% [Poison] debuffs and a 25% [Poison Sensitivity] debuff for 3 turns. If the initial target is already under 3 or more debuffs, places three 5% [Poison] debuffs and a 25% [Poison Sensitivity] debuff on all enemies for 3 turns instead. Cooldown: 5 Poison Sensitivity Poison 5%	Caustic Rebuttal [P] Formula: (EffectsAppliedOnTargetCountOfKind(ContinuousDamage_KindId)<5)(-0.05DMG_MUL)EffectsAppliedOnTargetCountOfKind(ContinuousDamage_KindId)+(EffectsAppliedOnTargetCountOfKind(ContinuousDamage_KindId)>=5)(-0.25*DMG_MUL) Whenever an ally is attacked, has a 25% chance of placing a 5% [Poison] debuff on the attacker for 2 turns. Whenever this Champion is attacked, the chance increases to 50%. Enemies under [Poison] debuffs inflict 5% less damage per each [Poison] debuff on them (stacks up to 25%). If there are multiple Champions on the team with this skill, only one will activate. Poison 5%
Heartpiercer	Perforate Formula: 4.6*ATK Attacks 1 enemy.	Sight In Formula: 7.6*ATK Attacks 1 enemy. If the hit is critical, places a 25% [Increase ATK] buff on this Champion for 2 turns. Cooldown: 4 Increase ATK 25%	-	-