Accel Synchro Monster

Accel Synchro Monster is a term used by the anime to describe Synchro Monsters that can only be Summoned using 1 Synchro Tuner Monster and 1 Synchro Monster; this type of Synchro Summon is referred to as an "Accel Synchro Summon" in the anime. Accel Synchro Monsters first appeared on Yu-Gi-Oh! 5D's - Episode 074, being used by the duelist Bruno who was known at that time as Dark Glass.

Performing an Accel Synchro Summon is treated as Spell Speed 2, as Dark Glass is able to chain his Accel Synchro Summon to Yusei's activation of a card effect (on Yusei's turn). This, coupled with the individual effects of the Accel Synchro monsters, provide a defense against effects that target Synchro Monsters, such as but not limited to the Infinity (archetype) monsters, leading Yusei and the rest of Team 5D's to pursue the secrets behind Accel Synchro Summoning during the events leading up to, and during, the World Riding Duel Grand Prix.

Tech Genus Blade Gunner MAXX-10000 and Shooting Star Dragon are the only Accel Synchro Monsters to have been shown so far.

So far it is known that Accel Synchro Monsters (primarily Shooting Star Dragon) will be premiere in the booster pack Starstrike Blast (the forementioned being the Cover Card), as well as the premiere of the first of the printed Synchro Tuner Monsters (primarily Formula Synchron) will be released in this pack as well.