My antipaladin's nightmare mount kept lighting on fire everything we'd ride over with its flaming hooves (e.g. shrubbery, commoners' huts, gnomes). While this is normally awesome, sometimes my allies prefer the two of us to be subtler. Out of grudging respect for my simple companions, I've been encasing my nightmare's hooves in makeshift metal boots. This makes my nightmare even angrier. I'd prefer an alternative.
Is there a printed means—preferably for AD&D—of allowing me or my nightmare to switch on and off my nightmare's flaming hooves?