First Come, First Served

First Come, First Served is a challenge that originated in Cmack's Survivor Skype 1:Borneo

Rules
For this challenge, all remaining players are given a list of numbers(usually 1 through the amount remaining). Under each number is a buff for a tribe, divided to make even tribes. Once someone selects a number, they join that tribe. The first tribe to completely fill up wins this challenge.