1 Tuner + 1 or more non-Tuner monsters Once per turn: You can send 1 Synchron monster from your Deck to the Graveyard then activate 1 of these effects; - Increase this card s Level by the Level of the sent monster. - Reduce this card s Level by the Level of the sent monster. During your opponent s Main Phase you can: Immediately after this effect resolves Synchro Summon 1 Synchro Monster using Material including this card you control (this is a Quick Effect). You can only Synchro Summon Accel Synchron(s) once per turn.