Mountain King vs Nari the Lucky

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Mountain King	Dwarves	Force	Attack	Legendary	Attack 25% Place: All battles
Nari the Lucky	Dwarves	Force	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
Nari the Lucky	60	6	19320 -11730	804 -628	1487 +375	104 +9	15	50 -13	30 -60	20 +20

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.
Nari the Lucky	Wee Filcher Formula: 2.1*DEF Attacks 1 enemy. Has a 50% chance of stealing 1 random buff from the target.	Rainbow of Woe Formula: 3.3*DEF Attacks all enemies. Has a 75% chance of placing a 50% [Decrease ACC] debuff and a 50% [Decrease RES] debuff for 2 turns. Cooldown: 4 Decrease ACC 50% Decrease RES	Irresistible Wealth Formula: 3.7*DEF Attacks all enemies. Has a 75% chance of placing a [Provoke] debuff for 1 turn. Also places a [Counterattack] buff on this Champion for 2 turns. Cooldown: 6 Counterattack Provoke	Joyful Song [P] Formula: 5*BuffsCountOnTeam(allyTeamId) At the start of this Champion's turn, transfers 1 random buff from a random enemy to a random ally. This Champion’s ACC is increased by 5 for each buff on each ally.