Keys to Alien-X

When you cast Keys to Alien-X, each opponent
makes a token that's a copy of it.

{1}, {t}: If all cards on the battlefield named Keys to
Alien-X are tapped, each player sacrifices Keys to
Alien-X, then searches their library or graveyard
for any card or chooses any card in their hand or
from outside the game, then plays that card
without paying its mana cost. If a player searched
their library this way, that player shuffles.
Activate only as a sorcery.