Caitlin, Queen of the Cats

{t}, Sacrifice a Creature: Create either a 1/1 Black Cat Token with Menace or a 1/1 White Black Cat Token with Trample.
Whenever you cast an instant or sorcery, if
you control either a Black Cat token or a
White Black Cat token, populate.
If you control both, copy that instant or sorcery.
"Ewe wohnt uh woh'r boh'll" - Caitlin