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Each player selects their hero in the Draft Phase. Every time you die, lose a tower or barracks you take a 1 drink.
If the opposing team kills Roshan finish your drink. If Roshan is stolen by the opposing team every player on that team must take a shot.
If you finish the game with more deaths than kills, you must take 3 drinks. The winning team gets to chose a shot for the losing team.
Hardcore mode: Every time you miss a skill shot, take a drink.