thara, celestal warbow

a weapon made for gods, granted to those worthy of its power, its physical form is unstable and almos impossible to wield by mortals, those who wish to use it must summon itf rom a demiplane allowing them to briefly tap into its infinite potential, it manifests as a majestic warbow that glows with silvery light, requires immense strenght and will to draw.

rainmker: on cast you choose a point that you can see, every hostile creature in a 90ft radus centered on that point must make a dexterity saving throw or take 5d6 piercing damage, each time they start their turn in the zone or enter it, taking half damage on a success, the zone lingers for 3 rounds.

relentless rain: when the damaging zone ends, whenever you hit a character with a ranged attack, it and any other creature within 5ft of it, will receive an additional 1d8 priecing damage, this can happen only once per turn per target, this lasts until a short rest.

 note: this is my attempt to recreate the taurons striikes from "warframe" in dnd, while this is listed as a spell, i intended tehm to be used by any class once per long rest, ofc you can always change this as you wish.