Gemhide Marauder

Trample
Whenever you sacrifice an artifact, put a +1/+1 counter on Gemhide Marauder.
Whenever Gemhide Marauder takes damage,
remove that many +1/+1 ccounters from it and
create a colorless Gem artifact token with
"{t}, Sacrifice this artifact: Add one mana of any
color to your mana pool."