Dragon Bone Excavator

{g}: Exile a creature card from a graveyard. Put a
+1/+1 counter on Dragon Bone Excavator.
If this card came into play through Progression,
add the power of the sacrificed creatures and
put that many +1/+1 counters on it.
Remove two +1/+1 counters from Dragon Bone
Excavator: Transform it to Draconic Mind
Mugger. "It seeks out bones from he earth,
prizing the ancient and rarest."