Search for the Cure

Counter target spell.
Reveal cards from the top of your library until you
reveal a nonland spell with a mana value of X or
more, then experiment a number of times equal to
the number of cards revealed this way. Place the revealed cards on the bottom of your library in a
random order.

Xr was the first to know about the worms, but the
only one he could trust was himself, and even he was struggling to find a way to prevent his infection.