While you have a "Solfachord" card(s) in your Pendulum Zone, when your opponent activates a Spell/Trap Card, or monster effect: Shuffle 1 face-up Pendulum Monster from your Extra Deck into the Main Deck, then apply these effects.
• Pendulum Monsters you control are unaffected by that effect.
• Cards in your Pendulum Zone cannot be destroyed by that effect.
• Cards in your Pendulum Zone cannot be banished by that effect.
You can only activate 1 "Solfachord Formal" per turn.