The raffle will end/start on Sunday (If the goal of 10 used slots is reached, if not you will get your keys back).To take part you have to send the administrator a trade request with the following items: 1 key = 1 slot on the raffle; 2 keys = 2 slots on the raffle and so on... Here you find the Trade Link: https://steamproxy.net/tradeoffer/new/?partner=164611229&token=OExwss7O

There's a maximum of 30 slots:

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Good Luck :)