User blog comment:Hamengeri/Wikia List of Gamemode concepts/@comment-5686533-20140304141144

Ability Draft in Dota 2 is described on the Dota 2 Wiki as follow :

"Players are given a random hero from all heroes that have 4 abilities. Then, all the heroes' abilities from the ten selected heroes plus the abilities of two more random heroes are put in a pool. The players take turns selecting any ability from the pool. Each player is allowed 3 normal abilities and 1 ultimate. Not recommended for new players as the games rarely obtain a 'middle ground', with most matches one team dominating the other."