Dragontooth Dagger

You gain a +1 bonus to attack rolls and damage
rolls you make with this weapon. On a hit with
this weapon, the target takes an extra 1d6 acid
damage.
Draconic Potency. Against enemies of the Cult
of the Dragon, the dagger's bonus to attack rolls
and damage rolls increases to +2, and the extra
acid damage increases to 2d6.
A dagger fashioned from the tooth of a dragon.