Arcane Autocrossbow 2.51

The auto crossbow fires bolts of a damage type of the caster chooses from fire, ice, lighting, force, acid, or poison. The bolts require a ranged spell attack and do 1d8 damage plus the caster’s intelligence modifier. An additional bolt is fired at levels 5,  11, and 17. All bolts fired in one round must be the same damage type, but may be cast at different targets.

Each bolt may push a large creature or smaller 10 feet in the opposite direction of the caster. Small creatures or smaller are knocked prone.

Attack does one additional d8 radiant damage vs undead.

As a bonus action, the owl may fire an adrenaline dart at an unconscious person restoring one hit point and waking the person. This effect may only benefit a target once per day.