Synchro Zone (Secret Rare)

Neither player can declare an attack with non-Synchro Monsters. You can only use each of the following effects of Synchro Zone once per turn. If a non-Tuner Synchro Monster(s) is sent to your GY: You can target 1 of them; Special Summon it, and if you do, it is treated as a Tuner. During your opponent's Main Phase: You can send this face-up card from your Spell & Trap Zone to the GY; immediately after this effect resolves, Synchro Summon 1 Synchro Monster using monsters you control as material.