Heartpiercer vs Treeshield Knott

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Heartpiercer	Dark Elves	Force	Attack	Uncommon	-
Treeshield Knott	Sylvan Watchers	Void	Support	Rare	Speed 15% Place: Crypts

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Heartpiercer	60	6	12555	1057	859	89	15	50	30	0
Treeshield Knott	60	6	16020 +3465	947 -110	1013 +154	101 +12	15	50	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%	-
Treeshield Knott	Thorned Riposte Formula: 1.4*ATK Attacks 1 enemy 3 times. Each hit has a 20% chance of placing a 25% [Decrease ATK] debuff for 2 turns. Decrease ATK 25%	Treeshield's Favor Formula: 0.15*TRG_HP Heals all allies by 15% of their MAX HP. Also places a 30% [Increase DEF] buff on all allies for 2 turns. Cooldown: 5 Increase DEF 30%	Root Rejuvenation Formula: 0.25TRG_HP Formula: 0.25MAX_STAMINA Revives 2 random allies with 25% HP and 25% Turn Meter. Also places a [Shield] buff on all revived allies for 2 turns, equal to 20% of their MAX HP. Cooldown: 7 Shield