Underground Cells

{t}: Add {1}.

{t}, Instant: If a Hunter, Human, or Atrocity died in combat, you may take control of it instead of sending it to the graveyard. Attach Underground Cells to it. While attached, its power becomes 0, toughness 1. It cannot attack or block. If it would die, you may tap Underground Cells instead. This card can be attached to only one creature at a time.