Angry Lady Marshmallow

Big angry ball of fluff. Angry Lady Marshmallow is so fluffy she is insulated from cold and lighting damage. though now that fluffiness seems somewhat harder.  In her anger she has also gained immunity to being charmed or frightened, she also has an advantage on saving throws against being restrained. Any attacks on her have advantage.

Berserker rage. Angry Lady Marshmallow will attack the closest target that attacked her. If there is more than one such target, she will attack the last one. If no such targets exists she will attack the closest creature that is not her summoner, unless 10 turns have passed since the Angry Lady Marshmallow has transformed. In that case Angry Lady Marshmallow transforms back.

Charge. If the Angry Lady Marshmallow moves at least 20 ft. straight toward a creature and then hits it with its Horns attack on the same turn the target takes and extra 2 (1d4)  piercing damage. If the target is large or smaller that target must succeed on a DC 13 Strength saving throw or be knocked prone.

Multiattack. Angry Lady Marshmallow makes two attack, one with her bite and one with her horns.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 1) acid damage. 

Horns. Melee Weapon Attack: +5 hit, reach 5ft, one target Hit: 5 (1d4 + 3) piercing damage. 

Acidic Spit. Ranged Weapon Attack: +5 to hit, range 30/60 ft., one target. Hit: 3 (1d4+1) acid damage.