Clockwork Consciousness

At the beginning of your upkeep, you may have another target artifact become an artifact creature
with power and toughness equal to it's converted
mana cost.
Sacrifice an artifact: Regenerate Clockwork Consciousness
Manipulation {2} ({2}: Put a control counter on Clockwork Consciousness. You may remove X control counters from Clockwork Consciousness. If you do,
you gain control of target creature with toughness X or
less. Activate this ability only as a sorcery.)