Cerebro

{x}, {t}: Tap target Mentalist, search your library for a mutant creature card with converted mana cost X or less, you may cast
that card without paying it's casting cost.
Then Shuffle your libary.

"These lights represent every living person on the planet. These white lights are the humans... and these are the mutants. You see, Logan? We're not as alone
as you think."
--Professor X