Alicorn

Charge. If the alicorn moves at least 20 feet straight toward a target and then hits it with a horn attack on the same turn, the target takes an extra 9 (2d8) piercing damage. If the target is a creature, it must succeed on a DC 15 Strength saving throw or be knocked prone.

Innate Spellcasting. The alicorn's innate spellcasting ability is Charisma (spell save DC 14). The alicorn can innately cast the following spells, requiring no components:

At will: detect evil and good, druidcraft, pass without trace

1/day each: calm emotions, dispel evil and good, entangle

Magic Resistance. The alicorn has advantage on saving throws against spells and other magical effects.

Magic Weapons. The alicorn's weapon attacks are magical.

Multiattack. The alicorn makes two attacks: one with its hooves and one with its horn.

Hooves. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.

Horn. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage.

Healing Touch (3/Day). The alicorn touches another creature with its horn. The target magically regains 11 (2d8 + 2) hit points. In addition, the touch removes all diseases and neutralizes all poisons afflicting the target.

The alicorn can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The alicorn regains spent legendary actions at the start of its turn.

Hooves. The alicorn makes one attack with its hooves.

Rainbow Shield (Costs 2 Actions). The alicorn creates a colorful magical field around itself or another creature it can see within 60 feet of it. The target gains a +2 bonus to AC until the end of the alicorn's next turn.

Heal Self (Costs 3 Actions). The alicorn magically regains 11 (2d8 + 2) hit points.