Generica the Witch

Protection from instants and sorceries.
{u}{b}: Play an ability of Welch the Blue.
0: Counter target spell. At the start of your
next upkeep, pay {u/b}{u/b}{u/b}. If you don't, you
lose the game.
{1}{u}{u}{u/b}, {t}: Declare a creature type.
Take control of all creatures of that type
target player controls.