Drake Twin Daggers

You shout the name of your two drake tooth daggers to activate them.
They merge into a shortsword with 20ft movement
as a bonus action you can make the weapon attack a neaby creature

the weapon has 5ft range, +7 to hit and does 2d6 poison damage
it will always attack the nearest creature, if that creature is an ally you can make a DC 12 Cha Save to make it attack a enemy instead