Hamund's Herbal Hypodermic

Hamund's Herbal Hypodermic HHbH p39 2nd-level transmutation Casting Time: 1 bonus action Range: Self Components: V, S Duration: 10 minutes When you cast this spell, you grow a hollow needle from your arm for the duration that can be used as a natural finesse weapon to make unarmed strikes that deal 1d4 + Dexterity modifier in damage.
  Strikes with this needle can also be used to quickly deliver a poison or herb that would normally take much longer to apply to a weapon. As a bonus action, you may use the needle to absorb a poison or herb that would normally be used to coat a weapon. If you do so, this needle acts as if it is coated in that poison or herb, with all the benefits that would entail.
  Classes: Artificer, Druid, Ranger, Sorcerer, Warlock, Wizard Source: HHbH, page 39