Elizah, Desert Performer
Legendary Creature — Tiefling Bard
Whenever a player casts a spell from their hand, that player exiles it, then exiles cards from the top of their library until they exile a card that shares a card type with it. That player may cast that card without paying its mana cost. Then they put all cards exiled with Elizah on the bottom of their library in a random order.
Allegiance (You can have two commanders if both have Allegiance.)
3/3
IF you have any other ideas, comment them please, Remember this commander is part of a set made for being Commanders for a Cube.