Ghost Lantern
{B}Artifact — Equipment
Whenever a creature you control dies, put a +1/+1 counter on equipped creature.
Equip {1}

Artifact — Equipment // Instant — Adventure
Artifact — Equipment
Whenever a creature you control dies, put a +1/+1 counter on equipped creature.
Equip {1}
Instant — Adventure
Return target creature card from your graveyard to your hand. (Then exile this card. You may cast the artifact later from exile.)
'Dies' means 'put into a graveyard from the battlefield.' If a creature is exiled instead of dying (Swords to Plowshares, Rest in Peace), dies triggers won't fire. Tokens do trigger 'dies' abilities briefly before ceasing to exist.