Instant Protection (CTRL to add secondary) Ramp Ramp (CTRL to add secondary) Removal Removal (CTRL to add secondary) Tokens Tokens (CTRL to add secondary) Treasure Treasure (CTRL to add secondary) Tutor Nature's Rhythm Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle
Bring a Core Constructed Deck to play for the tournament's entirety
Ideally, you would want to trigger Kelbek's milling effect as much as possible, in order to fulfill the requirements for Exchange of the Spirit
Similarly, it won't trigger if you tap a creature to activate a mana ability of another object (even if that mana ability also includes )
But in conjunction with Restage, it's especially fruitful
If you warp it for just , you get the creature and the effect right away, Mechanozoa goes into exile at the beginning of the next end step, and you can cast it on a later turn