You can only use the (1)st and (2)nd effect of this card’s name each once per turn.
(1) During your Main Phase: You can place this card you control and 1 “Centurion” monster from your hand or Deck, except “Centur-Ion Trudea”, face-up in your Spell & Trap Zone as Continuous Traps, but you cannot Special Summon “Centur-Ion Trudea” for the rest of this turn.
(2) During the Main Phase, while this card is treated as a Continuous Trap: You can Special Summon it, then you can increase its Level by 4.