Siege Stockpile

Whenever a creature enters the battlefield under
your control, put a stash counter on Siege
Stockpile.
{t}, Sacrifice Siege Stockpile: Create an X/X colorless Equipment Creature token, where X is
equal to the number of stash counters on Siege Stockpile. It has "Reconfigure {2}" and "equipped creature gains +X/+X" where X is equal to the
number of stash counters on Siege Stockpile.