Cryxis, False Blade

Equipped Creature gets +3/-1 and changeling.

Whenever equipped creature deals combat damage to a player, Cryxis becomes a copy of target noncreature artifact that player controls, except it’s name is “Cryxis, False Blade”, it has this ability, and it has “Equip: Sacrifice another Creature or Artifact.”

Equip: Sacrifice another Creature or Artifact

Cryxis, False Blade can be your commander.