RA04-EN021 * Crystron Quan * Super Rare * Quarter Century Stampede SDCB-EN022 [ Monster Effect ] While

[ Monster Effect ] While this card is in your hand: You can target 2 face-up cards you control

You can only use each of the following effects of "Centur-Ion Atrii" once per turn

while this card is in your GY (Quick Effect): You can Special Summon this card in face-down Defense Position

Other cards you control cannot be destroyed by your opponent's card effects

RA04-EN021 * Crystron Quan * Super Rare * Quarter Century Stampede SDCB-EN022 [ Monster Effect ] WhileDuring your opponent's Main Phase or Battle Phase: You can Special Summon 1 non Tuner monster from your hand, but it has its effects negated (if any), and if you do, immediately after this effect resolves, Synchro Summon 1 Machine Type Synchro Monster using only that monster and this card (this is a Quick Effect). You can only use this effect of "Crystron Quan" once per turn.