Look at those stats, talk about a munchkin!
As I've heard it, in the very early days, Gary and his friends mostly played wizards and had henchmen and hirelings to do the fighting. Being able to keep those henchmen and hirelings loyal was important. This style of play quickly disappeared as the game went into broader release and people formed larger parties of player characters. At that point charisma became the dump stat, but if you look at AD&D, you can still see the rules around henchmen and hirelings that was a relic of an earlier style of play.
You're joking, right? Charisma was the original dump stat...
Str, Int, Wis, Dex, Con, Cha...
I just had some serious flashbacks upon seeing those stats arranged in that order.
Seeing Mordenkainen's stats, and I can see them being real. And I am sure Gygax went through plenty of characters before he got those stats. Are they pre-magic items or are those with magic items? Weren't there fountains and other such things that would grant a character +1 to an ability score? Or is that something my mind just made up?
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Nope. Castle Amber has a few locations that raise ability scores by 1-3 points. A few other adventures as well.