Vraska, Relic Seeker [Ixalan Prerelease Promos] Iconic Masters Whenever you tap a land

Whenever you tap a land for mana

you may pay {4}

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {3}{U}{U} You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost

When Kozilek

Vraska, Relic Seeker [Ixalan Prerelease Promos] Iconic Masters Whenever you tap a landSet: Ixalan Prerelease Promos Type: Legendary Planeswalker Vraska Rarity: Mythic Cost: {4}{B}{G} +2: Create a 2 2 black Pirate creature token with menace. 3: Destroy target artifact, creature, or enchantment. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") 10: Target player's life total becomes 1.