Dirty Grave

{t}: Exile a creature of your graveyard, put a Dirty Grave 0/1 token in the square where you are. This token has "Any other player can't move more steps from this token. When a player is affected by this token then destroy this token".
{b},{t}, Sacrifice a creature you control: All creatures get -1/-1 until end of turn. You may return sacrificed creature to your hand at the beginning of your upkeep.