Eldritch Alignment: Cosmic Fury

As a action the user can do a flurry of blows, hitting a creature of choice in range with two sets of two punches, each set is a separate attack roll, on hit, each set does 2d6 radiant damage.

Critical hits cause the user to mark the target with a smaller spider constellation that crawls around their body and does 1d4 radiant damage per turn.

The target can choose to make a dexterity saving throw to kill the spider sooner. Damage does not start until next turn, and a successful saving throw will negate the damage.
This Attack requires a minimum of arms equal to the sets of punches thrown, and can be upcast if there are more arms summoned.

One use per short rest.