Public Gallows

{5}{b}{t}: This ability costs {1} less to cast for each creature you control. Put a mark
counter on target creature.
At the beginning of your upkeep, destroy
each creature with a mark counter on it. If a creature with indestructible has a mark counter on it, put it onto the battlefield
under your control instead.
"I had a really cool flavor text idea, but it won't fit on this card." — SkyFire