Field. Cannot be destroyed by your opponent's card effects while you control a "Centur-Ion" Monster Card. You can only use each of the following effects of "Stand Up Centur-Ion!" once per turn. During your Main Phase, if this card was activated this turn: You can send 1 card from your hand to the GY; place 1 "Centur-Ion" monster from your Deck in your Spell & Trap Zone as a face-up Continuous Trap. If a monster(s) is Special Summoned, you can: Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using monsters you control as material, including a "Centur-Ion" monster.