Coalescing Volley

Banding together, players make a volley of attacks which coalesce midair into a single devastating shot.

When casting this spell the player chooses a target within range of their weapon and calls out to their allies for assistance. The player holds their attack waiting for others to be in position. While holding their attack for this spell the ammunition or thrown weapon glows dimly. Allies may gather within 5ft of the initial caster and use a spell slot of this spell's level or higher to join in the volley with a ranged/thrown weapon, given the target can be hit with that weapon. A player joining in the volley is also concentrating as if they cast this spell. A player holding their shot for this spell may release it early using their reaction, in which case their attack is made using normal modifiers against the target and the player is removed from the volley. This spell fades at the end of a player's following turn if not utilized.

When releasing the volley all allies part of it and still within 5ft of the initial caster attack the target using normal modifiers. If at least 1 attack hits the target, all damage hits the target. Additionally, if at least 2 attacks hit the target, the target's resistance to this magical shot decreases by one level (Immune -> Resistant, Resistant -> Normal, Normal -> Vulnerable). Additionally, if at least 3 attacks hit the target, a d10 is added to the shot's damage for each attack that hit the target.