Elemental Fury

You summon the furious might of an elemental to aid you in your fight. You assume the form of an elemental of your choosing (you must have seen the elemental at least once before transforming into it). You can retain this form for the number of hours equal to half your level, you can chose to end the shape early as a bonus action.

In this form you gain the Hit Points and stats of the elemental form you choose, you also retain your Intelligence, Wisdom and Charisma ability scores. However in elemental form any armour you're wearing temporarily molds with the form becoming immaterial whilst you are an elemental. Additionally you cannot cast other spells in this form unless listed in the elemental's stats. When you revert back to your normal form you regain all your normal stats and return to whatever hit points you were on when you first cast the spell reach 0 hit points in elemental for you revert back to your normal form. If there is damage left over from the attack you take half that damage to your normal hit point value, if this would knock you unconscious, it does.