Building • Cost: 2 • HP: 3
Whenever your non-token units die, bury them here. Sacrifice Graveyard when four or more units are buried in it (and discard those units).
⤵ → Play a buried unit. (You still pay for it and must meet the tech reqs for it.)
Black Tech 0
While a unit is buried in Graveyard, that unit is not in play; it's in a special Graveyard zone. It loses all properties such as attachments, +1/+1 runes, damage, etc. when it goes there. When you later play it from Graveyard, it will arrive and trigger any "arrive" effects at that time. — Sirlin, 03/02/16