Rootwire Amalgam [The Brothers' War Prerelease Promos]

Set: The Brothers' War Prerelease Promos Type: Artifact Creature — Golem Rarity: Mythic Cost: {5} Prototype {1}{G} — 2/3 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.){3}{G}{G}, Sacrifice Rootwire Amalgam: Create an X/X colorless Golem artifact creature token, where X is three times Rootwire Amalgam's power. It gains haste until end of turn. Activate only as a sorcery.