Klauth, Unrivaled Ancient - Commander: Adventures in the Forgotten Realms (AFC)

Flying, haste
Whenever Klauth, Unrivaled Ancient 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
• #: 50
• Card Type: Legendary, Creature
• Casting Cost: {5}{R}{G}