Mountain King vs Scyl of the Drakes

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Mountain King	Dwarves	Force	Attack	Legendary	Attack 25% Place: All battles
Scyl of the Drakes	Barbarians	Magic	Defence	Legendary	-

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Mountain King	60	6	31050	1432	1112	95	15	63	90	0
Scyl of the Drakes	60	6	19980 -11070	859 -573	1387 +275	95	15	63	40 -50	0

Skills comparison

Mountain King	Thunder Cleave Formula: 0.27HP+1ATK Formula: 0.1MAX_STAMINA+0.02MAX_STAMINA*REL_TRG_BUFF_COUNT Attacks 1 enemy. Fills this Champion's Turn Meter by 10%. Fills by an additional 2% for each buff on the target.	Enchanted Axe Formula: 0.3HP+1.8ATK Attacks 1 enemy. Will ignore 50% of the target's DEF. Grants an Extra Turn if this attack kills an enemy. Cooldown: 5	Regal Force Formula: 0.35HP+1.8ATK Attacks 1 enemy. Will ignore [Shield], [Strengthen], [Unkillable], [Ally Protection], and [Block Damage] buffs. Decreases the cooldown of the Enchanted Axe skill by 2 turns if this attack kills an enemy. Cooldown: 5	Fabled Skill [P] Formula: 0.5B_ATKKILLED_ENEMIES_WHOLE_BATTLE Increases this Champion's ATK by 50% each time this Champion kills an enemy. Stacks up to 100%. Immune to [Decrease ATK] and [Block Active Skills] debuffs.
Scyl of the Drakes	Drake's Swiftness Formula: 3.5DEF Formula: 0.15MAX_STAMINA Attacks 1 enemy. Has a 20% chance of placing a 30% [Decrease SPD] debuff for 2 turns. Also has a 30% chance of decreasing the target's Turn Meter by 15%. Decrease SPD 30%	Wingbeat Flurry Formula: 1.55*DEF Attacks all enemies 2 times. Each hit has a 20% chance of placing a [Stun] debuff for 1 turn. Cooldown: 4 Stun	Phoenix Rite Formula: 0.5*TRG_HP Revives an ally with 50% HP and places a 50% [Ally Protection] buff on them for 2 turns. Cooldown: 6 Ally Protection 50%	Boundless Life [P] Formula: 0.1*TRG_HP Heals all allies by 10% of their MAX HP at the start of each turn. Also places a 30% [Increase SPD] buff on a random ally for 2 turns. Increase SPD 30%