jmartkdr2
Hero
I think that there's an even easier solution to this: just let a nat 20 auto-succeed on saving throws. (and a nat 1 auto-fail)
There's a major difference in how it feels to have an impossible save DC and just an unlikely one - and there are a lot more ways to deal with an unlikely one by gaining advantage on the roll or otherwise making extra rolls. But if the save is just impossible you need a party member with bless prepared and a free slot and nothing better to do with their concentration... and even then it only hopefully gets your total high enough.
I would still make Indomitable auto-succeed a la legendary resistance, and would add a bullet to Warcaster to make a minimum damage threshold (say, your con save bonus) to even force a roll for concentration, but other than that one case I think the core problem can be solved with one common house rule (or maybe more accurately just a common misunderstanding)
There's a major difference in how it feels to have an impossible save DC and just an unlikely one - and there are a lot more ways to deal with an unlikely one by gaining advantage on the roll or otherwise making extra rolls. But if the save is just impossible you need a party member with bless prepared and a free slot and nothing better to do with their concentration... and even then it only hopefully gets your total high enough.
I would still make Indomitable auto-succeed a la legendary resistance, and would add a bullet to Warcaster to make a minimum damage threshold (say, your con save bonus) to even force a roll for concentration, but other than that one case I think the core problem can be solved with one common house rule (or maybe more accurately just a common misunderstanding)