3.2 Surfaces should always trigger a saving throw at every turn to avoid damages (not to insta break concentration and insta deal damages).
Feel free to corect me, this is serious question ...
But shouldnt succesfull saving throw only halven the damage you get (unless you have
Evasion) ?
I mean it works that way for every AoE spell i know, so ... it would make sence to use same rules for Larian AoE, no?
Yes, maybe.
We don't have enough details about the concentration mechanic in BG3 to find a good balance imo.
On the other hand, if they allowed us to target the ground with spells...
Firebolt on a target = 1 to 8 damages
Firebolt on the ground = 1 to 4 damages (1-2 with a sucessfull ST) + a possible condition that add another 1D4 damage/turn.
Is that balance ? I don't know. We don't have more details about "surfaces conditions" (burning).[quote]
It's important that attacks/spells that normally deal 0 damage on a miss, in this surface-change, deal 0 damage on a passed ST. Exactly because of the Concentration mechanic of keeping spells going. Keeping up concentration is a big part of spellcasting classes, and sources of guaranteed damage mess with this because they result in a concentration check.
Your "firebolt on the ground" example would deal a guaranteed 1-2 damage (prompting a concentration check) and then a possible additional concentration check each turn. This is much more powerful than a single "concentration check if the attack hits," and unduly punishes spellcasting classes.
Maaaaybe it'd be okay for leveled spells to cause automatic damage as a surface because you're still spending a valuable spell slot to do so. But at the very least cantrips
should not.