Stitched Portcullis Specter

Walls you control gain +2/+0

Gargoyles you control have {1} : sacrifice this creature and put a +1/+1 counter on Stitched Portcullis Specter

During your combat phase if you control a wall or gargoyle and Stitched Portcullis Specter is in your graveyard you may pay {1}{w}{b} to put it onto the battlefield tapped and attacking