Belletar Mage-slayer vs Dyana Gloompiercer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Belletar Mage-slayer	Ogryn Tribes	Void	HP	Legendary	HP 33% Place: All battles
Dyana Gloompiercer	Sylvan Watchers	Void	Attack	Epic	Attack 20% Place: All battles

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Belletar Mage-slayer	60	6	21975	848	1266	108	15	50	50	0
Dyana Gloompiercer	60	6	15525 -6450	1421 +573	848 -418	104 -4	15	60 +10	30 -20	0

Skills comparison

Belletar Mage-slayer	Fume Ax Formula: 0.22*HP Attacks 1 enemy. Has a 75% chance of decreasing the cooldown of a random skill of the ally with the highest Turn Meter, except this Champion, by 1 turn.	Slayer's Roar Formula: 0.22HP Formula: 0.2HP Formula: 0.2*MAX_STAMINA Attacks all enemies. Places a 50% [Increase ATK] buff and a 60% [Increase DEF] buff on all allies for 2 turns. Also heals all allies by 20% of this Champion's MAX HP and fills all allies' Turn Meters by 20%. Cooldown: 4 Increase ATK 50% Increase DEF 60%	Mercy of the Oasis Formula: 0.5TRG_HP Formula: 0.5MAX_STAMINA Revives all dead allies with 50% HP and 50% Turn Meter, then places a [Shield] buff on all revived allies for 2 turns, equal to 20% of this Champion's MAX HP. Also places a [Block Debuffs] buff on all allies for 2 turns. Cooldown: 6 Shield Block Debuffs	Critical Juncture [P] Has a 75% chance of decreasing all of an ally's skill cooldowns by 1 turn whenever they are revived. Once per turn, if an ally is killed, reduces the cooldowns of all this Champion's skills by 1 turn.
Dyana Gloompiercer	Firefly Hatchet Formula: 1.85*ATK Attacks 1 enemy 2 times. Each hit has a 25% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Decrease DEF 60%	Moonlight Ambuscade Formula: -0.2 Teams up with 2 random allies to attack a single enemy. The allies joining the attack will use their default skills. If the target is under a [Decrease DEF] debuff, these attacks will ignore 20% of the target’s DEF. Cooldown: 5	Covert Blitz Formula: 3.75*ATK Attacks all enemies. Before attacking, places a 30% [Increase C. RATE] buff and a 30% [Increase C. DMG] buff on this Champion for 2 turns. If this attack kills an enemy, places a [Veil] buff on all allies for 1 turn. Cooldown: 4 Veil Increase C. DMG Increase C. RATE 30%	Gloompiercer [P] This Champion will ignore [Shield] and [Strengthen] buffs when attacking under an [Increase ATK], [Veil], or [Perfect Veil] buff.