The Wraith Tank

{t}: Destroy target creature. It can't be
regenerated.
{x}{u}{r}{r}{t}: Deal {x} damage to target
player or planeswalker.
{x}{u}{u}{u}{u}{t}: Tap {x} lands target
opponent controls. They do not untap on
their opponent's next untap step. Tap
this creature, it does not untap during
its controller's next untap step.
Crew 10