Hoid, Wit & Worldhopper

: Players cannot win the game and players cannot lose the game.
+2: Surveil 1. Draw a card. Scry 1. Mill a card. You gain 1 life. Each opponent loses 1 life. Put a +1/+1 counter on a creature you control.
-X: Hoid becomes a creature with power and toughness X until the end of the turn.