Just wanted to ask a quick question about the guide in section 23.2 Maximizing Dexterity you say :
"A beginning wizard is trained in Unarmored Defense, which means that their Armor Class is equal to (their level)+12+(Dexterity Modifier). So for instance, a wizard with a +0 Dexterity Modifier will have an Armor Class of 22 at 10th level."
I thought armor class was calculated by AC = 10 + Dex mod + proficiency bonus + armor’s item bonus to AC + other bonuses + penalties. Wouldn't the wizards AC be 13 at level 10.
Sorry if I am missing something I'm new to 2e.