The Sentinels of Light
Dagger of Venom
This black +1 dagger has a serrated edge. It allows the wielder to
use a poison effect (as the spell, save DC 14) upon a creature struck
by the blade once per day. The wielder can decide to use the
power after he has struck. Doing so is a free action, but the poison
effect must be invoked in the same round that the dagger strikes.