Æther Lich Husk

Defender
Sacrifice an artifact: Æther Lich Husk gets +2/+2
until end of turn.
If three or more artifacts were sacrificed in this
way this turn, Æther Lich Husk loses defender
and put deathtouch and trample counters on it.
The villagers offer trinkets and baubles to keep the evil
spirit at bay. Unfortunately, they got a little
overzealous one day.