Territorial Gargoyle Pack

Flying
All creatures you don't control get -1/-1.
When this creature enters the battlefield it deals
4 damage to all planeswalkers you don't control.
{t}, Sacrifice Territorial Gargoyle Pack: Exile all
non-land permanents on the battlefield. This
creature cannot come out of the graveyard once
this ability has been used.
"They come but not out."