Writhing Lurker

Megamorph {3}{c} (Turn Writhing Lurker
face up for its megamorph cost, for every
+1/+1 counter on Writhing Lurker return
a Horror permanent from your graveyard
to your library)
{4}{c} add +1/+1 counter to Writhing Lurker
(can only be used if face down)