I know this isn't a submission, but I have an idea. First, random Santas spawn around the map, with 100 HP each. When someone hits it or shoots it, Santa gets activated and 6 little elfs spawn around him. The elfs move around and have little tiny knifes to stab you with. Each elf has 50 HP. Once all the elfs are killed, more elfs spawn, and this keeps happening until Santa is killed. When you kill an elf, you get a special item, such as a hat. But when you kill Santa, you get a special weapon.
Don't ask me why the files have those names, i actually have no idea but I was too lazy to change them