Robusco's Unmentionable

Vigilance, Trample, Reach, Infect, Menace, Regenerate {2}
Whenever a creature dealt damage by Robusco's
Unmentionable this turn is placed in a graveyard,
return that card to the battlefield under its
owners control. The returned creature gets a
traumatized counter. So long as a creature has
a traumatized counter, that creature can not
attack or block and it looses all abilities. That
creatures type becomes Coward in addition to
its other types.