Leandra of Duskwood

Whenever you cast a noncreature spell, you
may pay {1}{u}. If you do, create a 1/1 blue Illusion creature token with flying and prowess (Whenever you cast a noncreature spell, it gets +1/+1 until end of turn.)
"The longer you linger, the angrier they become
so I suggest you move with a little more purpose
out of Duskwood."