What so is this +3 or +5?
Pfsts... way to ignore SEARCH bar for inventory.
For the high AC, of course. 
Maybe it's too early for you to play casters if you didn't know it's useful before?
Ti's an outrage :D ! Immediately on it.
Lich has a lot of options. Here is a weird idea someone had which (admittedly is very poorly optimized and would in my opinion work better as arcane trickster) does a lot of damage.
Yeah to both.
I can see 2 viable builds: some sort of shapeshiftin', chargin' death knight (pick the damage, -str on natural attacks, and the damage on each charge hit, and a way of getting pounce).
OR
Favored metamagic extend, the "buff lasts 24 hour" feats, and when your caster level hits... 25? you can give your entire team undead immunities and DR for 24 hours then support with spells like this
Which aoes for 465 damage once megamagiked, despite the description. All buffs like haste, greater invis, etc will last 24 hours. Having the whole team under haste and greater invis is funny because you can let them loose in real time on a map and most shit will run away as as your dudes spread out and slaughter the poor terrified demons.
Summons are good early but not worth the actions of your lich late game. Even pre-casted with all the feats the best they can be is meatshield at this point.
I'm running 24 hour buffs lich with sorcerer, though grey-fur might be better (if you can legendary proportions THEN turn them undead).
None of the classes really work that well with demon. It has some minor synergy with kineticist (the 1 demon aspect that gives a free AoO when you attempt a combat maneuver works with Kineticist CMs on blasts and you can get free ranged AoO blasts from it) and it also has some minor synergy with casters (aspects that give + to DCs and - to enemies saves, as well as roll twice take best result stuff). It has negative synergy with any class that has rage, because demonic rage and rage cannot be active at the same time. It does have a lot of item support however and I think that if you go with the items, what is potentially the best way to go is either an arcane trickster focusing on dealing damage with rays, or some sort of ranged throwing weapon build.
Yes, a level 5 spell caalled life bubble.
Yeah, it's ridiculous. It seems there is actually an advantage to having seperate spell books which is that you get more spell slots in total. But that's complete shit compared to combining and adding the caster levels together.
Either take 10 more levels of wizard or arcane trickster or eldritch knight, or loremaster. Or barbarian, I heard they mix well with wizards, really uh strong uh synergy.
