Sozin's Comet (0332) (Borderless) [Avatar: The Last Airbender] Rivals of Ixalan where X is the amount

where X is the amount of {E} paid this way

Create a 2/2 white Knight creature token

Set: Modern Horizons 2 Type: Basic Land — Mountain Rarity: Common ({T}: Add {R}

Set: Battle for Zendikar Prerelease Promos Type: Creature — Vampire Rarity: Rare Cost: {4}{B}{B} Flying

or sorcery card with converted mana cost less than or equal to the number of colors of mana spent to cast this spell

Sozin's Comet (0332) (Borderless) [Avatar: The Last Airbender] Rivals of Ixalan where X is the amountSet: Avatar: The Last Airbender Type: Sorcery Rarity: Mythic Cost: {3}{R}{R} Each creature you control gains firebending 5 until end of turn. (Whenever it attacks, add {R}{R}{R}{R}{R}. This mana lasts until end of combat.) Foretell {2}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)