*Updated build to cope with R10 DC. Now making the thread title worth it. On post #33 I have the first version where I was mixing more DPS at cost of DC, and the reasons why I did it.*
The idea here is to be a DC caster, like a wizard but with the sorcerer advatanges. Sorcerer is tight on feats and have a bit of trouble with spellpen, but I think it's better than wizard currently. Also in my previous experience playing pale master for years, sorcerer is less durable. But without the undead form, that is pratically inviable for reaper unless you have easy time to get a good healers to harm you (not the case for most people), this difference doesn't exist anymore (what is left is the reflex save difference that wizards get).
Asimar is the best race overall if you have the racial points to spend on it. It will loose 1 point of CHA, but will have the ability to boost it higher than any other race for limited time thanks to divine resolve, it has the lays and 10% hp, and gets more spellpen. Dragonborn is solid because it gets more CHA and the same spellpen. My build is a drow because it looks better and I don't have racial past lives.
Starting stats - Max CHA rest CON.
Feats:
This is not what I used to lv up. See the lv up info below.
normal: 1 sf necro - 3 wiz pl - 6 quicken - 9 heighten - 12 spellpen - 15 completionist - 18 greater spellpen
epic: 21 epic spellpen - 24 embolden - 27 gsf necro - 30 esf necro.
destiny: 26 toughness - 28 elusive target - 29 frog
scion: 30 shadowfell
*I don't have pl wiz and epic spell focus necro. Currently I'm runnning with ruin and Greater Ruin to farm Amber temple so these feats are very useful to kill deathwarded stuff and reapers if you are soloing. When I ever get my wings, and that will take at least one year depending on my real life, I'll change ruins to max DC again.
Destiny: EA
Max CHA and spellpen. Rest do wathever. Twist Necromancy Specialist (requires buying it in a previous life), Meld Into Darkness (seriously, twist it. Can't stress enough how this is better than more CHA that would give half a DC. You're a better caster with Meld to play more agressive than with half more DC), 3 CHA.
I do twsit Piercing spellcraft because I am a drow so I don't have spellpenetration coming from arcanum in the racial tree. I make it up with the twist. If you are wondering why I am a drow, that is because I needed the past life.
Action Points:
41 Vistani
24 EK - medium armor + CHA + arcane barrier
6 Racial - 2 CHA
9 Falconry - 1 CHA, 6 PRR, sprint boost. Use harper if you don't have falconry.
GEAR
Commentarys on red for those who don't have the harder to get raid gear.
head I use Epic Deific Diadem for the proc. I'm not sure this is helping much. If you have a reaper helm, it's the best option of course. If you don't have, I'd go with LGS hp set, closing it with either goggles, gloves or cloak
neck slaver1: con 17 - resist 14 - quality con 4 - spellcraft 22
cloak cc: Wisdom 15 - dodge 15 - insightful prr 18
belt slaver2: sheltering 45 - magnetism 185 - quality CHA 4
ring1 Legendary Spinneret: Spell Lore 15 - Quality Potency 32 - Quality Spell Focus Mastery 2 - Spell Penetration 7 - Green Augment Slot
ring2 Legendary Skulled Ring: Necromancy 8 - Wizardry 412 - Green Augment Slot
gloves Bluescale Guides: Efficient Embolden II - Magical Efficiency 10 - Profane Well Rounded 2 - Green Slot - Yellow Slot. I don't have this yet. So I use Legendary Gauntlets of Innate Arcanum instead.
boots Legendary Softsole Slippers: Ghostly - Perform 22 - Insightful Charisma 9 - Green Augment Slot
trinket Symbol of the Slave Lords: True Seeing - Inightful con 8 - Lesser Displacement - Green Slot - Blue Slot
bracers slaver3 false life 68 - devotion 185 - quality PRR 11 - quality fortificaiton 45
body shadowscale armor. Because i don't have the Bluscale Guides, I use Legendary Coat of the Traveler
goggles Legendary Symphonic Lenses - charisma 19 - mobility - Blue Augment Slot. Again, because I use the arcanum gloves instead of the Bluescale, here I use LGS.
Hand 1 Nightmother scepter: focus 7 - insight focus 4 - spellpen 7 - insight spellpen 4 - sentient bonuses
Hand 2 LGS 30 amp - 50 amp - exceptional cha 2 - Legendary Affirmation
CHA breakdown
27 + 8 tome + 2 race + 2 EK + 4 vistani + 1 Falconry/Harper + 2 completionist + 2 ship + 2 yugo + 19 item + 9 insight item + 2 exceptional item + 2 profane item + 4 quality item + 2 artifact item (set) + 8 angel + 3 twist + 2 remnant + 2 sentient + 5 reaper = 108 CHA.
Necromancy DC
10 + 9 lv + 49 cha + 8 item + 4 insight item + 1 profane item + 2 quality item + 2 augment + 1 wiz pl + 4 scion + 3 angel + 3 magister + 4 sentient set + 2 embolden + 1 ship + 4 slaver set + 3 focus feats + 4 reaper = 114 necromancy + 2 sacred (varies, but usually at least one stack is up) = 116.
Racial completionist would get +5 cha (4 inherent and 1 from harper), for 116 necro standing/118 with deific procs. You can drop epic spell pen for 117/119 or adjust the gear to fit +20 item. Max with reaper helm is 118 standing I belive.
Spellpen
20 + 8 feat + 9 pl + 8 item + 4 insight item + 3 EA + 1 ship + 1 filigree + 5 reaper = 59. If you are aasimar or dragonborn you get +3 from racial tree = 62. This is good for most content. I personally run around with a spellpen twist that costs me 1 CHA, so to make it even I don't buy all the CHA in EA, I get reborn in Light Instead, so cost 1 DC at the end of the day. Again that is because I run a lot of amber and failing spellpen check on slaad is annoying. And because I am a drow. By the way, it seems otto's sphere of dancing is not subject to spell resistance currently, so I abused it when I was doing tethy.
Other Schools DC
10 + 9 lv + 49 cha + 7 item + 4 inisght item + 1 profane item + 2 quality item + 2 augment + 1 pl + 2 scion + 3 angel + 4 slaver set + 2 embolden + 1 ship + 4 sentient set + 4 reaper = 105 enchantment. Apply +3 for evo and conjuration, but I didn't even bother to slot augment for them. I don't have room for PK, so illusion is irrelevant.
Some defense info
So if you want to know how the defenses will be, well it is not as good as a warlock of course. I am with 1400 HP, 12 dodge, 171 PRR and 117 MRR outside of reaper, and I don't have the 4th core in Grim Barricade yet. So except about 1800 HP and 190 PRR inside reaper with investiment with this gear, with 1k more temporary from affirmation every min. You can also try to fit LGS set, that would cost DC somewhere, and that is what I was going to do because I don't have the bluescale guides yet, so this means gloves, goggles and hat are places that I could try to fit the 2 LGS pieces, and the other would go to 19 CHA item. But since the build is working allright without it, I prefered to wait the expansion before I spend codex runes, or if I ever pull a bluescale. The saves are garbage, but I don't feel they're something that is very important or are getting me killed. Currently 67/52/65 fort/ref/will with just GH.
After all, you best defenses are wings. Abuse wings. And jeweled cloak - always equip before an encounter where it will be useful or that you don't know what's going to happen. Also meld, and mist stalker, and CC. So the correct use of these things make you a better caster than someone with higher numbers in the sheet. A really big advantage that sorc has over wiz is that it casts faster, and that improves your capacity to do stuff without getting killed.
Spells
This looks like the optimal spell selection for the build's purpose. I don't feel like missing anything. Of course, this was not what I used to lv up, but it's the high reaper endgame setup. All these spells are used, except hipno, probably the most useful thing at lv 1 you could slot there would be merfolk's blessing, but I wouldn't change any other, maybe fireball, soundblast or the eletric dot, but there is no point because there isn't better options really.
How do you level up this
I did level up with this feat order:
1 maximize - 3 empower - 6 quicken - 9 heighten - 12 spellpen - 15 completionist - 18 greater spellpen - 21 epic spellpen - 24 embolden. Before taking level 27 I change maximize for sf necro. So at level 27 I take gsf necro. Then esf necro at 30. Then another feat swap is done, changing empower for past life wizard.
You get a free feat swap by completing the Hall of The Mark quest in the market. So you can use this to change maximize to spell focus necromancy. The other feat swap is done by using a Flawless Siberys Dragonshard or Astral Shards. You can also swap it out before level 17, so that it will cost you an Exceptional Siberys Dragonshards instead. You can also just skip empower and take the past life feat earlier, so that only 1 feat swap is done, without cost.
The metamagics are used fully only for SLAs. For the other spells I run with all but empower. For this reason if you want to save your Flawless Siberys, swapping empower out before lv 17 is interesting because at this level the SLAs are becoming weak and not that useful anymore, while your sp pool is larger and larger allowing more use of high lv nukes (basically chain and DBF). I go with fire as main tree all the way from 1 to 29. For lvs 1 to 9 I use earth as second tree. When at 10 Ball Lightning kicks in, I change the secondary tree for air, keeping main as fire. I continue to do that until cap, when I change to fully DC zero DPS build.
I do use a Blood of Dragons when I hit 30 and change to DC. You can slowly change the spells for free as well. If you have Mass Hold that is what is needed to alreay be useful on high skulls endgame, so there isn't hurry to swap the nukes out.
In any case, sorc is godly at heroics, I went literally on running speed. I just added this section to the post to clarify about the feats.