FormerlyHemlock
Hero
Smart casters won't get anywhere near combat or will build a caster class with a high AC. Who cares how smart your creatures are. Combats last 2 or 3 rounds. How soon do they figure out who the caster is and then how to take them out while the martials are hammering on them?
I keep this hearing this rubbish. You seem to think the martials stand there watching the humanoids run by them hammering the casters doing nothing and that the casters stand where they can be easily gotten to casting spells. Smart casters get nowhere near battle, nor let on that they're the casters until the martials are engaged. The battle is almost over by the time they're casting mop up spells or cantrips to finish off mobs that have been beaten down.
What kind of group do you play in? Groups where the casters run up first and start launching spells? I don't play in those kind of groups. Casters if the win initiative, usually defer their actions and hang back until the martials are clearly engaged and obstructing the path. Then they start casting spells as needed to make sure we win. They may not cast more than a few cantrips for most battles letting the martials hammer.
Also, in campaigns in which all monsters predictably engage in in "kill the guy wearing robes first," well, that's what Seeming is for. Now the monsters are actually preferentially attacking the tanks because they look like squishies.
