Geralf, Visionary Stitcher

Zombies you control have flying.
{U}, {T}, Sacrifice another nontoken creature: Create an X/X blue Zombie creature token, where X is the sacrificed creature's toughness.

Ornithopter of Paradise

Aven Envoy

Brass Man

This creature doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {1}. If you do, untap this creature.

Phyrexian Walker

Excavated Wall

Defender
{1}, {T}: Mill a card. (Put the top card of your library into your graveyard.)