Finally, your commander must also not conflict with the companion condition
Graveyard Trespasser, however, has stuck around since its release
It too easily allows for access to a large portion of ones deck, without having to guess how far you need to go, and leaves the mana up for casting the cards drawn right away
Aetherjacket Chrome Courier Drill-Skimmer Flowstone Thopter Gold-Forged Thopteryx Hope of Ghirapur Krenko's Buzzcrusher Liberator, Urza's Battlethopter Ornithopter Ornithopter of Paradise Pilgrim's Eye Reconstructed Thopter Roterothopter Skyscanner Snare Thopter Spined Thopter Spotter Thopter Telethopter Thopter Assembly Thopter Squadron
If this happens, Eye of Nidhogg will be put into its owner's graveyard as a state-based action once the creature stops being a creature
As a 3/3 for 3 mana its very efficient, and also offers tremendous upside