Hulkbuster

Equip {2}
Whenever a creature with power 10 or greater
enters the battlefield, you may reveal Hulkbuster
from your hand, if you do, you may put it onto
the battlefield attached to a creature you control
(unequipping other Stark Tech from it)
Equipped creature gets +5/+10, trample, reach,
and If equipped creature would be destroyed,
instead tap the equipped creature and destroy Hulkbuster.
You may only have one Stark Tech attached to equipped creature at a time.