Spreading Contraptions

At the beginning of your upkeep, if Spreading Contraptions is untapped, you may tap and put a
stun counter on it. If you do, put a stun counter
on target permanent.
{3}{w}{w}, {ut}, Untap another tapped artifact you
control: Create a 4/4 Skulk Golem artifact
creature token with "Whenever this creature
attacks, put a stun counter on this creature."