The Shaft

Equipped creature gets +2/+2, Trample, and
must attack each turn if able.
Whenever equiped creature deals combat damage
to a player, you may destroy target Planeswalker
or Enchantment that player controls. If you do,
that player gains control of The Shaft until it's
owner's next turn.
{3}: Return The Shaft to its owners hand. "Only
it's controller may activate this ability."