Wanda Maximoff, Scarlet Witch

Flying
Hex 1 (Whenever a creature attacks you, it gets
-1/-1 until end of turn.)

X-Trait --- Whenever you cast your second spell
of the turn, you may choose one -- Other mutant creatures lose all abilities and become humans with base power and toughness 1/1, or all creatures become mutants in addition to its
other types.