Klauth, Unrivaled Ancient
Type
Legendary Creature — Dragon
Mana Cost
{5}{R}{G}
Power / Toughness
4 / 4
Oracle Text
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.