Keys to Alien-X

When Keys to Alien-X enters the battlefield, each
opponent makes a token that's a copy of it.

{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 puts it onto the
battlefield. If a player searched their library this
way, that player shuffles. Activate only as a sorcery.