Oracle's Vault [Amonkhet Prerelease Promos] Bird Scout The Izzet's plans to exploit

The Izzet's plans to exploit the undercity ran into a few stubborn obstacles

Whenever another artifact enters the battlefield

Cursed Type: Basic Land — Swamp Rarity: Common ({T}: Add {B}

your opponents and creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof

Oracle's Vault [Amonkhet Prerelease Promos] Bird Scout The Izzet's plans to exploitSet: Amonkhet Prerelease Promos Type: Artifact Rarity: Rare Cost: {4} {2}, {T}: Exile the top card of your library. Until end of turn, you may play that card. Put a brick counter on Oracle's Vault. {T}: Exile the top card of your library. Until end of turn, you may play that card without paying its mana cost. Activate only if there are three or more brick counters on Oracle's Vault.