Historical Rules · 17 November 2023
Rule 702.146a
Official source text from the 17 November 2023 Rules release
Disturb is an ability found on the front face of some transforming double-faced cards (see rule 712, “Double-Faced Cards”). “Disturb [cost]” means “You may cast this card transformed from your graveyard by paying [cost] rather than its mana cost.” See rule 712.8c.