Make limited weapons for each event
Ex: for Halloween, Reaper scythe which acts like the sword of... Nvm I forgot the name but it's he one where it spawns the skeleton... And make it balanced like a little bit stronger
Ex 2: for Christmas make it a ranged bomb called the "Jolly bomber" or something it will be shot through a crossbow then it is a splash but the damage is balanced, it's ability is to shoot the ground and make candy canes come out of the ground piercing any opponent on screen.
Don't forget to make extremely hard containments for it. 😎😎
(Feel free to balance it devs)
(My birthday is tommorow :])