Goat format ruling
Spiritualism

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
- The Spell/Trap Card goes to its owner’s hand (in case your Spell/Trap Card was on your opponent’s side of the field).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.