Great comments.
As @Okidoki said well, a cleric would do better to attack with a bow than with sacred flame.
The AI (rightly) has enemies focus on the wizard and either the wizard spends spell slots with mirror image and misty step or the other party members lose their turns helping the wizard back on its feet. So the wizard transforms from the classic glass cannon into the "keep the innocent alive" character.
The under the house rules, AI is wrong -- the 'cannon' threat is not the guy in the robe it's the eldritch knight that occasionally use shockwave to throw you off cliffs but also has the AC and HP to absorb any attacks. So under current rules the metagame party is a martial build cleric with self healing items, a battle master with a belt of pig's heads, an eldritch knight with 9 base intelligence and the intelligence headband and thief with all the poison bottles. No need for a wizard or warlock. And you could probably get rid of the cleric if you wanted to because the spell that that makes the cleric a formidable foe -- hold person -- isn't worth using most of the time because you are so much more likely to hit the enemy three times than you have the enemy lose its savings throw and get in a free critical hit.
Granted, the warlock doesn't suffer as much as the cleric and wizard but with sleep & fireball effectively nerfed the wizard loses the "cannon" status but retains the "glass" property.
Last edited by KillerRabbit; 20/10/20 03:56 PM.