REDU format ruling
Spiritualism

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Return 1 Spell/Trap Card your opponent controls to the hand. This card's activation and effect cannot be negated.
Rulings
Return 1 Spell or Trap Card on your opponent's side of the field to the owner's hand. This card's activation and effect cannot be negated by any other card.
- The Spell / Trap Card goes to its owner’s hand.
- This targets 1 Spell / Trap Card your opponent controls, even monsters treated as Equip Spell Cards.
- If you cannot activate (play face-up) Spell Cards, you cannot activate this card.
- This may be due to an effect like Spell Canceller, Sonic Jammer, or Cold Wave.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.