Obeus' Enforcer

Trample, first strike
Obeus' Enforcer enters the battlefield tapped
and doesn't untap during your untap step.
Sacrifice an artifact: Untap Obeus' Enforcer.
Any of your opponents may discard a card to
tap Obeus' Enforcer. If Obeus' Enforcer was
tapped this way, create a colorless Secret
artifact token.