FrogReaver
The most respectful and polite poster ever
A mook with 50 hp can be kill edon a failed save to a 10d6 fireball, dragon sorc +5 damage and empower. It won't happen all the time, but it's not a particularly low chance of occurring either. Average damage would be 47. Slightly above average rolls and you've achieved killing the 50 hp foe outright.5. It's spell level +1 for CO
New encounter guidelines say to not use X2 enemies for PCs. Easy fight for 6 is 7800 xp lvl 9 iirc. That's 10 CR 3s roughly maybe 11 each with 50-70hp roughly.
Mooks at those levels theoretically are CR 2 or 3. Fireball is very mediocre vs a low combat RAW die to hit point inflation
Hence why ramping up CO with crits and no saves in effect is better imho. If I'm not a sorcerer I probably wouldn't be casting it often but I don't think I would bother with fireball much either.
CO at least it's easily added to any spell casting class.
Chromatic Orb would basically require a crit to do the same thing. Though it can outright kill even the 70 hp foe with and slightly above average damage rolls on a crit.
That's intersting.