Klauth, Unrivaled Ancient [The List] Special Metal Energy Set: Sword & Shield: Base

Set: Sword & Shield: Base Set Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

other playtest cards you cast cost {1} less to cast

Set: Neo Discovery Unlimited Type: Psychic Rarity: Holo Rare Retreat cost: Colorless

or creature with flying

Klauth, Unrivaled Ancient [The List] Special Metal Energy Set: Sword & Shield: BaseSet: The List Type: Legendary Creature Dragon Rarity: Mythic Cost: {5}{R}{G} 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.