Molten-Forged Hydra

Metalcraft - If you control 3 or more artifacts, Artifacts you control are creatures and are 5/5's.
When an Artifact enters the battlefield, if an
Artifact doesn't have an Equipment equipped to it, Make a Colorless Equipment token named: "Steel Shell" with Totem Armor and equip it to the artifact. (Repeat until all artifacts have one
equipped)
Fabricate 3