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Dagger of Venom
Weapon (dagger), rare
You have a +1 bonus to attack rolls and damage rolls
for attacks you make with this magic weapon. If you
apply poison to the dagger, other than its own poison, its
saving throw DC increases by 2.
Once per day, you can use an action to cause thick,
black poison to coat the blade. The poison remains for 1
minute or until you hit with an attack using this weapon.
When you hit a creature with the poisoned dagger, the
target must make a DC 15 Constitution saving