While this card is a Continuous Trap, Level 5 or higher "Centur-Ion" monsters you control cannot be destroyed by card effects. You can only use each of the following effects of "Centur-Ion Primera" once per turn. If this card is Normal or Special Summoned: You can add 1 "Centur-Ion" card from your Deck to your hand, except "Centur-Ion Primera", also you cannot Special Summon "Centur-Ion Primera" for the rest of this turn. During the Main Phase, if this card is a Continuous Trap: You can Special Summon this card.