Lifebound Lich

Cumulative upkeep—Pay 2 life.
Menace
Whenever Lifebound Lich blocks or is blocked
by a creature, exile that creature. If a creature
is exiled this way, gain life equal to that
creature's toughness.
"The binding is complete!" the arrogant cleric crowed.
"My life itself will keep you in thrall!" The lich only
bared its teeth in reply.