Professor Xavier

When Professor Xavier enters the battlefield and
at the start of each of your turns, scry 1.
{w}{u}, {t}: Look at target opponent's hand. Exile
an instant or sorcery card from their hand with a
mana value equal to or less than the number of
Mutants you control. Until end of turn, you may
cast that spell without paying its mana cost.
"My name is Charles Xavier. I am a mutant."