Tinker [From the Vault: Exiled] Coldsnap There are three rounds and

There are three rounds and you'll have to pick a different Alien agenda each round

When Faerie Seer enters the battlefield

Set: Black & White: Boundaries Crossed Type: Lightning Rarity: Rare Retreat cost: Colorless

Set: Skyridge Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

Unfortunately

Tinker [From the Vault: Exiled] Coldsnap There are three rounds andSet: From the Vault: Exiled Type: Sorcery Rarity: Mythic Cost: {2}{U} As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card, put that card onto the battlefield, then shuffle. "What separates us from mere beasts is the capacity for self improvement."