5e is supposed to be a low magic system. Look at the random treasure tables in the DMG and you'll see the assumption that characters have very few magic items. A game run that way will make resistance to non-magical weapons a serious problem. If your game has lots of magic weapons, that resistance shouldn't be considered in the CR calculations.
Take a look again; my rough analysis of the CR 5-10 tables (as an example) shows 1.26 disposable pot/scroll and 0.6 non-disp. magic item/hoard CR 5-10; so 7 such hoards in 3 levels= 8.5 disposable and 4.2 non-disp.magic items per 3 levels for the party;
so thats 2 pots/scrolls and 1 magic item per PC per 3 levels.
A "normal" supply of magic items makes the party way more capable than MM CR anticipated.
Your right, my original example did not include a "normal" number of magic items - I should have given him more. In actuality, the L19 fighter should have had 6-7 magic items by time he had the meeting w/the balrog and at least 1 relevant potion - so lets give him a pot of fire resist or speed, +1 shield, +3 plate, a +1 polearm, +2 sword, ring of prot +1, belt of giant strength...fair enough?
I agree that the CR's be MM are not well matched to any party that does not meet those limitations above. More than four characters means the number of actions focused on the monster are overwhelming. Even legendary actions barely keep up.
uhhh yeah it takes more than 4 level 7s, but i'm guessing 4 L9s would prob.pwn him.
But what really makes the biggest difference is playing the monsters smarter. In their lair they have home field advantage in the form of supporting monsters, modified terrain, traps, knowledge of positions with tactical benefits, etc.
Dude - PLAYERS can play smart too, just like DMs - and giving them lair stuff, tactical position, and allies adds to the CR so its not really germaine to a discussion re a monster's CR rating.
It doesn't bother me that the MM durante fit my game perfectly. No published material ever has, and I couldn't care less about balance. Fairness is for kindergarten. Adventurers are out to beat the odds, run away when they're overmatched, or get a fun turkey shoot out of the occasional easy encounter.
A lack of balance bothers me, and many other consumers of this game.... and yeah,there were far more balanced works - 3.5 and 4e had some problems but were MUCH better in THIS aspect - they had clear, reasonable CRs that MEANT something.
Ignore CR, use the book as a spark to your imagination.
I don't need a
spark, I need some
stats I can reasonably rely on, so that I don't have to do EVERYTHING from scratch.
I really don't understand apologists lol
I say:
This rule is unbalanced! Apologist response:
Make your own rule up, you can, it says so in the book!
I say:
This monsters stats are waaay off. Apologist response:
Use it to spark your imagination!
I say:
This module was boring. Apologist response:
Make your own! You can, it says so in the book!
LOL I paid WOTC to make this game, they did sloppy work in this aspect of it, and I am calling them out for it - kapesh?
If I pay for dry cleaning and my shirt comes back with dirt on it, I'm gonna have something to say. I suppose our apologist here would say "
Oh well, they inspired me to do my own cleaning. Yay!" Whatever. lol