Stiles sets up a betting board rather early on, figuring it'll be something that might help the betas bond a bit. It started off with a few silly things but the main category quickly became 'what is going to try and kill us next'. The name was changed after Derek expressed concerns over how cavalier Stiles was about dying and instead became 'what is going to put us in danger next'. The rules were simple:
Each of them contributed to a pool.
Each beta was given the opportunity to change their pick after something tried to kill them or once a month (if things were quiet)
Winner got the contents of the pool
If there was no clear winner or if there was more than one and they didn't want to split it, pack could make an argument for why their pick was the closest.
Scott put down 'Peter betraying the pack'
Peter in retaliation put down 'Argents being Argents'
Both refused to change it.
Stiles put down 'Dereks love life'
Erica put down 'Stiles losing his mind in a haze of caffeine after too many sleepless nights researching'. Boyd silently added his name against that pick as well.
The problem was Stiles seemed to always get it right. No matter what he wrote down each time, it usually happened in some way.
Derek's love life - a barista he'd been tentatively flirting with at the coffee shop turned out to be a succubus
Extreme cold (mocked by the others for being written down in the middle of a heatwave)- an abominable snowman popped up and set off a cold spell that even werewolf heat and Isaac's scarves couldn't ward off
Scott's cooking - After breaking some of Melissa's kitchenware while trying to make a romantic meal for Allison (the exact details of how remain a mystery, although Isaac was involved) and replacing it with a new set from a cute little shop that seemingly popped up out of nowhere, the pack quickly found out that there was a poltergeist attached.
The only time he didn't put anything down, was when he got possessed. And Peter argued that he technically still got it right since the only thing in his section was his name... Which was accurate in its own way (Stiles was not pleased by this logic and refused to talk to anyone for a long time)
He began to get gradually weirder and weirder with his picks, not even really trying to win after a while. He was a little confused and concerned by his strange predictions and hoped that eventually it would get too absurd to possibly come true.
Musical theatre - a siren showed up and almost lured Isaac into the swimming pool with her voice.
Killer Tomatoes - Lydia ended up nearly choking on her salad
Hummus - Jackson managed to ingest poisoned hummus and became practically feral.
Puppies - Stiles woke up one day to a very stressed Derek with an armful of his now tiny canine betas. Stiles didn't mind that one so much.