Soul of Theros - An avatar in the shape of a gigantic hoplite, made of starlight from Nyx.
They are simple cards they dont come into the battlefield tapped, they dont shock you like shock lands, and they dont retrieve other lands like fetch lands
If the copied creature is a token, Omni-Changeling copies the original characteristics of that token as stated by the effect that created that token, with the listed exception
With this engine, youll have a safe way to search for cards such as Melony (which works like a charm with this Shady Dealings Inteleon engine because it lets you attach a discarded Water Energy Card to any of your Pokemon V ), Roxanne, and more
Your Bant commander has access to green and white, so +1/+1 counters are almost mandatory
If you are interested, head over to my CubeTutor link, and try drafting it for yourself