You create a spherical eyeball from magical shadow that floats just behind and above your head. When you cast this spell, and then as a bonus action on each of your turns until the spell ends, you can cause the eye to emit one of the following effects:   Darkbolt. The eye sends a bolt of shadowy energy at a creature you can see within 60 feet of you. Make a ranged spell attack against the target. On a hit, the target takes 2d6 cold damage and 2d6 necrotic damage.   Envenomed Pulse. The eye releases a sickening, strobing pulse at a creature you can see within 60 feet of you. Make a ranged spell attack against the target. On a hit, the target takes 2d8 poison damage and is poisoned until the end of its next turn.   Shadow Sentry. The eye emits magically disruptive pulses. The eye interrupts the next spell cast within 60 feet of you by a hostile creature before the start of your next turn. The spell must include you as a target or in its area and must be of 6th level or lower, otherwise the eye doesn’t interrupt the spell. An interrupted spell fails and has no effect. If the eye interrupts a spell, the eye disappears, and this spell ends.   Umbrage Beam. The eye sends a beam of disorienting shadow at a creature you can see within 60 feet of you. The target must succeed on a Wisdom saving throw or be incapacitated until the end of its next turn.