Kuldotha Forgemaster [Double Masters] The Brothers' War Retro Artifacts put one onto the battlefield

put one onto the battlefield tapped and one to hand

Transform it into a third side that's a 3/3 Phyrexian Horror artifact creature

then return to the beginning

{1}: Inkmoth Nexus becomes a 1/1 Phyrexian Blinkmoth artifact creature with flying and infect until end of turn

you may exile your hand

Kuldotha Forgemaster [Double Masters] The Brothers' War Retro Artifacts put one onto the battlefieldSet: Double Masters Type: Artifact Creature Construct Rarity: Rare Cost: {5} {T}, Sacrifice three artifacts: Search your library for an artifact card, put it onto the battlefield, then shuffle. The goblins say it used to be larger, before it began to stoke the Great Furnace with pieces of itself.