Temulor, Silent Scream

When you cast Temulor, Silent Scream, put X
cards your opponents own from exile into their
owners' graveyards, and all creatures get -X/-X
until end of turn.
{x}{c}: Choose a color. Target opponent exiles the
top X cards of their library. Create a colorless
Eldrazi creature token with power and toughness
each equal to the number of cards of the chosen
color exiled this way.