Energy is Feeling

Energize (You may cast this spell by paying {e}
equal to its mana value; Instead of paying its mana
cost. If that spell has an X in its cost than you
may pay any amount of {e} for X.)
As an additional cost to cast this spell, pay any
amount of {e}
Exile the top X cards of your library equal to the amount of energy spent to cast this spell. You
may play those cards until the end of your
next turn.