Heartpiercer vs Dagger

Overall comparison

HERO	Fraction	Element	Type	Rarity
Heartpiercer	Dark Elves	Force	Attack	Uncommon
Dagger	Banner Lords	Void	Attack	Rare

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Heartpiercer	60	6	12555	1057	859	89	15	50	30	0
Dagger	60	6	12720 +165	1387 +330	793 -66	101 +12	15	57 +7	30	0

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%	-
Dagger	Double Daggers Formula: 1.65ATK Formula: 0.04MAX_STAMINA Attacks 1 enemy 2 times. Each critical hit decreases the target’s Turn Meter by 4%.	Precision Sabotage Formula: 3.65*ATK Attacks all enemies. Has a 50% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Cooldown: 4 Decrease DEF 60%	Swordbreak Knife Formula: 5.8*ATK Attacks 1 enemy. Has a 50% chance of placing a 25% [Decrease ATK] debuff for 2 turns. Has a 50% chance of placing a 50% [Decrease ATK] debuff instead if the target is under a [Decrease DEF] debuff. Cooldown: 4 Decrease ATK 25% Decrease ATK 50%