Elimination Mode 3.0 is a tournament organized by moonduck[1]. This tournament uses a special rule that if a hero is picked or banned in one game, they are banned for the rest of the series.
Each day the viewers get to vote for 30 heroes to be eliminated from the hero pool for that day. The only exception from this rule is for the grand finals, where the public only gets to ban 10 heroes to leave enough heroes in the pool for a best-of-5.
Additionally DotaCinema owner SUNSfan gets to ban 1 hero each day with the so-called SUNSban.