Beast Arm

The spell will have to be recast if you wish to change back to a human, or change to a different beast, or add another arm (Though both can be cast on in the same action). The attack will be an unarmed strike, and will last until dispelled, also taking another bonus action, and the attack will be counted as magical, for the purposes of overcoming resistance. It will become one of the following list, of your choice:
>Tentacle of the Squid- You gain a +15 ft. to the reach of the attack.
>Muscle of the Bear- You deal one extra hit die on the attack.
>Claws of the Cat- The attack is (Still magical) slashing, and deals +3 damage.
>Sting of the Jelly- The opponent, when hit, rolls a constitution saving throw (Spellcasting save). On a fail, they take an additional 1d8 lightning damage, and are stunned until it is next your turn. They also roll with disadvantage on the save if you choose to perform this attack on them again. However, the attack will never crit.
>Head of the Snake- On a failed Constitution saving throw (Spellcasting save), they take 1d6 poison damage, and must reroll the save every time it is your or their turns. This will continue till they die or they succeed on the save, at which it will end. If they survive death saves, the effect will still have ended.