Whir of Invention [Aether Revolt Prerelease Promos] Elemental Rogue Set: Gatecrash Type: Land —

Set: Gatecrash Type: Land — Mountain Plains Rarity: Rare ({T}: Add {R} or {W}

Exile them at the beginning of the next end step

When Necromancy enters the battlefield

Set: Dominaria Prerelease Promos Type: Legendary Planeswalker — Karn Rarity: Mythic Cost: {4} +1: Reveal the top two cards of your library

Whir of Invention [Aether Revolt Prerelease Promos] Elemental Rogue Set: Gatecrash Type: Land —Set: Aether Revolt Prerelease Promos Type: Instant Rarity: Rare Cost: {X}{U}{U}{U} Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.