Crawling Chaos

Protection from non-white, Devoid
At the beginning of combat, roll a ten sided
dice to determine X. Crawling Chaos' Power is
equal to X. When Crawling Chaos deals damage
to an opponent, choose a player at random.
Reveal the Xth card from the chosen player's
library, the card is cast without paying its mana
cost. If the card has an X in its mana cost, treat it
as the dice's outcome. If the card can't be cast,
exile it.