The Black Arrow (#171)

Type: Legendary Artifact — Equipment

Text: Flash
When The Black Arrow enters, it deals 1 damage to any target. If a Dragon is dealt damage this way, destroy it.
Equipped creature gets +1/+1 and has reach.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Set: The Hobbit (#171)