Leyline Tyrant [Zendikar Rising Prerelease Promos] Cat Nightmare Seeker Adept deals combat damage

Seeker Adept deals combat damage to a player

X can't be 0

000 Type: Legendary Creature — Demon Primarch Rarity: Rare Cost: {3}{U}{R} Flying

Set: Doctor Who Type: Artifact Rarity: Uncommon Cost: {3} {T}: Add one mana of any color

(Your artifacts can help cast those spells

Leyline Tyrant [Zendikar Rising Prerelease Promos] Cat Nightmare Seeker Adept deals combat damageSet: Zendikar Rising Prerelease Promos Type: Creature Dragon Rarity: Mythic Cost: {2}{R}{R} Flying You don't lose unspent red mana as steps and phases end. When Leyline Tyrant dies, you may pay any amount of {R}. When you do, it deals that much damage to any target.