Blackscale's Bite

You temporarily transform the black dragon scale used in the spell's casting into an imposing halberd with a black metal arm and a head made of pure acidic energy. This magic weapon lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 2d10 acid damage on a hit and has the heavy, reach, and two handed properties. Additionally, choose one creature within 5 feet of the target. It must succeed a Dexterity saving throw or take half the acid damage dealt by the attack as the acid splashes towards it. If you drop one of the weapons or throw it, it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause one or both weapons to reappear in your hand.

If you spent one or more sorcery points as part of casting this spell, it also gains the following feature: As an action, you can flourish the halberd and summon spectral green dragon's wings at your back which carry you to a point you can see within 30 feet. Creatures within 5 feet of the point you left behind must succeed a Dexterity saving throw or take 1d10 acid damage. The spell then ends.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage caused by the spectral dragon wings increases by 1d10 for every slot level above 2nd. Additionally, when you cast it using a 3rd- or 4th-level spell slot, the damage of the weapon increases to 3d10. It increases again to 4d10 using a 5th- or 6th-level slot, and to 5d10 using a spell slot of 7th level or higher.