Explosive Meditation

Affinity for nonland permanents
Y is the amount of mana spent to cast this spell.
Chose one —
•Exile the top X cards of your library. You may cast
a nonland card with converted mana cost Y or less
from among them without paying its mana cost.
•Exile the top Y cards of your library. You may cast
a nonland card with converted mana cost X or less
from among them without paying its mana cost.