Sunfire Torch
From The Lost Caverns of Ixalan set
Sunfire Torch
Artifact — Equipment
Equipped creature gets +1/+0 and has "Whenever this creature attacks, you may sacrifice Sunfire Torch. When you do, this creature deals 2 damage to any target."
Equip
(
: Attach to target creature you control. Equip only as a sorcery.)