Krypto Monlith

{t}: Add one mana of any color. Activate only
while Krypto Monolith is a land.
Experiment - At the beginning of your endstep, if
you cast two or more spells with different card
types this turn, put target creature an opponent controls third from the top of its owner's library. Activate only while Krypto Monolith is your
active plane.