Grinning Goblins

Grinning Goblins can't attack or block.
Morph {b/r}{b/r} (You may cast this face down as a
2/2 creature for {3}. Turn it face up any time for its
morph cost.)
When Grinning Goblins becomes unmorphed,
target player gains control of it.
At the beginning of controller's upkeep, they
lose 3 life.