Quantum Hijinks

At the beginning of each player's upkeep, that
player puts all nonland permananets they control
that aren't named Quantum Hijinks into a face
down pile. That player shuffles that pile, then
splits it into two even face down piles. That
player puts all of the cards in one of those piles
onto the battlefield and exiles the other.
"The space time continuum is not a toy.
Do not play with it."
-Riift Crapht's Guide to Time-Hopping