the biggest problem with MK
1) his A3 has a 5 turn cooldown and the skill is not worth it is the same as his A1 no difference.
2)He is very slow so you will get to stun him or freeze him before he gets any chance to attack.
how I would like to see him change would be
MOUNTAIN KING SKILLS
Thunder Cleave [HP][ATK]
Attacks 1 enemy. Add Ignores 25% of the target’s DEF.
Level 2: Damage +5%
Level 3: Damage +5% ( make 10%)
Level 4: Damage +5% (make 15%)
Level 5: Damage +5% (remove)
Enchanted Axe [HP][ATK] (Cooldown: 5 turns) (Make 3 turn)
Attacks 1 enemy. Ignores 50% of the target’s DEF.
Level 2: Damage +5%
Level 3: Damage +10%
Level 4: Damage +10% (Make 15%)
Level 5: Cooldown -1 (Remove)
Regal Force [HP][ATK] (Cooldown: 5 turns)
Attacks 1 enemy. Ignores [Shield] and [Block Damage] buffs. Change to (Ignores all Buffs ) (Ignores 100% of the target’s DEF. ) (enemies killed by this attack cannot be revived)
Level 2: Damage +5%
Level 3: Damage +5% (Make 10%)
Level 4: Cooldown -1 (Remove)
Fabled Skill [Passive]
Increases this Champion’s ATK by 50% each time this Champion kills an enemy. Stacks up to 100%. Resets each round.
Change [Passive]
Whenever an enemy places a [Stun], [Freeze], [Fear], [True Fear], [Sleep] or [Provoke] on this Champion. Immediately removes all [Stun], [Freeze], [Fear], [True Fear], [Sleep] or [Provoke] debuffs from this Champion and will counterattack the enemy
Just an idea I think he needs a lot of gear in order to be good in the arena and there are a lot better epic even rare champions that do the same amount of with great gear.
I do believe he needs a buff but I do not think it will happen.