Runic Ammunition

Alter: Runic ammunition resembles normal ammunition that are etched with runes and are magically discordant to spellcasters. When a creature concentrating on a spell or magical effect is hit by a piece of runic ammunition, that creature makes the Concentration check with disadvantage.
You have a +1 bonus to attack and damage rolls made with this piece of magic ammunition. Once it hits a target, the ammunition is no longer magical.

Attunement: No
Rarity: Rare
Type: bolts, arrows, stones, bullets
Cost: 450gp

Griffons Saddlebag, Vol 1