Wildheart Unicorn

If the unicorn 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 2d8 piercing damage. If the target is a creature, it must succeed on a Strength saving throw or be knocked prone. The DC for this saving throw is equal to your druid spell save DC.

The unicorn and creatures of its choice within 10 feet of it have advantage on saving throws against spells and other magical effects.

The unicorn's weapon attacks are magical.

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

Melee Weapon Attack: your druid spell attack bonus to hit, reach 5 ft., one target. Hit: 2d6 + your Wisdom modifier bludgeoning damage.

Melee Weapon Attack: your druid spell attack bonus to hit, reach 5 ft., one target. Hit: 1d8 + your Wisdom modifier piercing damage plus 1d8 radiant damage.

The unicorn magically regains hit points equal to 2d8 + your Wisdom modifier.

The unicorn makes one attack with its horn. Shield of Faith. The unicorn casts the shield of faith spell on another creature, which lasts until the end of the unicorn's next turn (no concentration required).