Hoard-Smelter Dragon [Commander 2014] Elf Druid Ally Set: Guilds of Ravnica Prerelease

Set: Guilds of Ravnica Prerelease Promos Type: Creature — Elemental Rarity: Rare Cost: {1}{R} Whenever you cast a red spell

Set: Kaladesh Type: Artifact Rarity: Common Cost: {2} When Glassblower's Puzzleknot enters the battlefield

Set: Invasion Type: Artifact Creature — Golem Rarity: Uncommon Cost: {5} {1}

Erg Raiders deals 2 damage to you unless it came under your control this turn

Hoard-Smelter Dragon [Commander 2014] Elf Druid Ally Set: Guilds of Ravnica PrereleaseSet: Commander 2014 Type: Creature Dragon Rarity: Rare Cost: {4}{R}{R} Flying {3}{R}: Destroy target artifact. Hoard Smelter Dragon gets +X +0 until end of turn, where X is that artifact's mana value. He collects the precious metals, and then converts the rest to propellant.