Z'Karo, Death's Bane

Deathtouch, trample
At the beginning of your upkeep, if Z'Karo is in
your graveyard, put a fossil counter on it.
As long as Z'Karo has a fossil counter on it, you
may cast it from your graveyard. When you do,
it costs {2} less to cast for each fossil counter on
it, is an artifact in addition to its other types,
and enters the battlefield with three -1/-1
counters on it.