The Dark Sign

Enchant Player

At the beginning of the enchanted players upkeep, put a
-1/-1 counter on each creature they control.

If a creature they control would be put into the graveyard, return it to the battlefield tapped. They lose life equal to its mana value.

"The Darksign signifies an accursed Undead. Those branded with it are reborn after death, but will one day lose their mind and go Hollow"—Kingseeker Frampt