Accel Synchro Summon

Accel Synchro Summon is the method of Summoning the new Accel Synchro Monsters. This type of Synchro Summoning was first seen in Episode 74, used by Bruno as Vizor. This type of Synchro Summoning is exclusive to the anime.

The Accel Synchro Summon varies from the normal use of Synchro Summoning. All of the monsters utilized for the summoning have to be one Synchro Tuner Monster and 1 non-Tuner Monster. Accel Synchro Summoning can be performed even during the opponent's turn. The required Tuner monster is called a Tuner Synchro Monster.

In the anime, it has been implied that in order to perform this type of Synchro Summoning, one must achieve Clear Mind at the time. You also need to have extreme speed.

Accel Synchro Monsters are still Synchro Monsters.

OCG/TCG Application
In the TCG/OCG, Synchro Monsters that have the Tuner sub-Type have a Quick Effect that allows the controller to Synchro Summon during the opponent's Main Phase. Also, Accel Synchro Summoning is not officially recognized as a game term or summoning method. It is a Synchro Summon that occurs during the opponent's turn. As such, any Synchro Monster can be Synchro Summoned with this method.