Firestar, The Bread Cat

Flash
Firestar, The Bread Cat cannot attack or block.
Whenever an opponent casts a spell, that player gains control of Firestar, The Bread Cat.
Tap one other untapped permanent that player controls chosen at random.
That permanent doesn't untap for as long as they control Firestar, The Bread Cat.
"50% Bread, 50% Cat, 0% Brain Cells"