Grimstaff
Explorer
The 1e DMG is the single most helpful book for a GM of any kind, of any level of ability. I've now been playing RPGs slightly in excess of thirty years and I still consult it.
It is a masterpiece...

The 1e DMG is the single most helpful book for a GM of any kind, of any level of ability. I've now been playing RPGs slightly in excess of thirty years and I still consult it.
Amazingly, it's still not in there...
-O
But it's definitely in the Glossary, I just saw it there.
AD&D DMG said:Magic Resistance - The percentage chance of any spell absolutely failing in the monster’s presence. It is based on the spell being cast by an 11th level magic-user, and must be adjusted upwards by 5% for each level the caster is below 11th or downwards by 5% for each level the caster is above 11th. Thus a magic resistance of 95% means that a 10th level magic-user has no possibility of affecting the monster with a spell, while a 12th level MU has a 10% chance. Even if a spell does take effect on a magic-resistant creature, the creature is then entitled to normal saving throws.
(2) I'm glad I already mostly know how to play. Gary was a wonderful and energetic author, and his voice is clear in every paragraph, but holy cow is the 1e DMG a mess. It's organized by stream of consciousness, near as I can tell, and it's very difficult to find exactly what I'm looking for. OSRIC has been a great help with this.
It wasn't until Tom Moldvay came along that we actually got a well-organised guide to learning D&D.
No love for Holmes?![]()
No love for Holmes?![]()
The concept is introduced and described in the AD&D Monster Manual, and otherwise does not get a mention in AD&D.