Crystron Quondam
Machine/Synchro/Tuner
Machine/Synchro/Tuner
1 Tuner + 1 or more non-Tuner monsters
During your opponent's Main Phase or Battle Phase, you can: Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using monsters you control including this card (this is a Quick Effect). If this Synchro Summoned card is destroyed by battle or card effect: You can target 1 "Crystron" monster in your Graveyard, except a Synchro Monster; Special Summon it.