Klauth, Unrivaled Ancient

Legendary Creature — Dragon — {5}{R}{G}

Flying, haste
Whenever Klauth attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end.

Rarity: mythic

EDHREC rank: 2174