Previously, this was represented by transforming cards, but that doesnt quite capture the flavor of turning opposing creatures to your side
Pioneer is currently making all kinds of waves in the secondary market - it wasn't long ago that Boros Convoke sent this knight card flying sky high
The set compilation was 45 Artifacts, 56 Black cards, 56 Blue cards, 56 Green cards, 56 Red cards, 56 White cards, 25 Gold or Multicolored cards and 33 Lands
Warp World: With a lot of tokens, you can reset the board with all your creatures, artifacts, lands, and enchantments (minus your graveyard and exile zones) out on the battlefield
The best ones have evasion, usually Trample
And don't worry about playing A Whole New World into a Prince John, we don't care if they draw an extra 2 or 3 or 4 cards