Search for Opening case of Dota 2 found 2 Referrals
Get 10 $ for using to open Dota 2 Cases
Get 10 $ for using to open Dota 2 Cases with High Chance of dropping some of the most Expensive Skins , and all this for free
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This is a legit DotA site that gives you $10 to open DotA cases. You must have a Steam account. Good luck!