1 Tuner + 1+ non-Tuner monsters
Face-up cards in your Spell & Trap Zone cannot be destroyed by card effects. You can only use each of the following effects of Centur-Ion Auxila once per turn. If this card is Special Summoned: You can add 1 Centur-Ion card from your Deck to your hand. During the End Phase: You can place 1 of your non-Synchro Centur-Ion monsters that is banished or in your GY, in your Spell & Trap Zone as a face-up Continuous Trap.