Servant's Clasp

Equipped creature has undying. (When it dies,
if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)
Specialty -- As long as equipped creature shares a creature type with Servant's Clasp, it has "When this creature dies, Demon spells you cast cost {1} less to cast until end of turn."
Equip {3}