Heart Of The Undercity

Trample, dredge 6

Undergrowth- When Heart Of The Undercity
enters the battlefield put a +1/+1 counter on it
for each creature card in your graveyard.

Scavenge {2}{b}{b}{g}{g} Put X +1/+1 counters
on target creature were X is the number of
creatures in your graveyard.

It's the remains of the city itself