Half Orc (Not sure of alternate racial traits)
STR 8, DEX 14, CON 14, INT 13, WIS 12, CHA 15+2
Sorcerer, Crossblooded, Orc and Efreeti.
Traits: Wayang Spellhunter (Acid Arrow), Magical Lineage (Acid Arrow)
Favored Class: Half Orc each level.
Feat1: Extend Spell
Feat3: Spontaneous Metafocus (Acid Arrow)
Stat4: +1 CHA
Feat5: Empower Spell
Feat7: Spell Focus?
Sorc7: Improved Init
Stat8: +1 INT
Feat9: Spell Penetration?
Feat11: Intensify Spell?
At 1st level, spells are Snowball and Magic Missile.
Bloodline Power: Orc (Scaling touch-delivered buff)
At 3rd level, Mage Armor, Enlarge Person replaces Burning Hands.
Bloodline ability is Elemental Resistance (Fire) 10.
At 4th level, spell is Acid Arrow (of course). Extended acid arrow is (2d4+2) for 4 rounds.
At 5th level, 2nd level spell is Spectral Hand, bloodline spell is Bull's Strength, 1st level spell is Shield. Empowered Acid Arrow is (2d4+2)*1.5 for 2 rounds.
At 6th level, 3rd level spell is Vampiric Touch for 3d6+3, and Extended Empowered Acid Arrow, which can be switched to fire damage for (2d4+2+3)*1.5 for 6 rounds.
At 7th 3rd level spell is Lighting Bolt, Bloodline Spell is Fireball. Either can be 7d6+7 or 7d6+10 damage. 2nd level spell is See Invisible, 1st level spell is Vanish. Spell Focus (if taken) is probably on Lighting Bolt as it's more flexible than fireball for me.
At 8th level, Summon Monster IV. Extended Empowered Acid Arrow is (2d4+2+4)*1.5 for 6 rounds.
At 9th level, Orc Fearless Bloodline Power (2 AC, Immune to Fear, lose light sensitivity.), Black Tentacles, Wall of Fire, Communal Resist Energy, 2nd and 1st level undecided. Acid Arrow is now (2d4+2+4)*1.5 for 8 rounds. Spell Penetration makes the fireball and lightning bolt more useful, but they're going to have less than optimized DCs.
After that I'll figure out more.
In the end, I decided to back up to only one slice of cheese, and just took Magical Lineage rather than doubling down with Wayang Spell Hunter. This means the "set them on high temperature fire for the last minute of their lives" stunt slides back to 8th level rather than 6th.
Here's the build:
I might swap Highlander for Seeker before he plays at 2nd level. Perception is more useful than Stealth, though being stealthy is pretty useful.
You are correct - I can't take Spontaneous Metafocus until 5th level.
As a crossblooded sorcerer, I get my choice of bloodline spells between the two. My 3rd level choices are burning hands or enlarge person; I'll be taking enlarge person instead. My 5th level choices are scorching ray or bull's strength. I'll be taking bull's strength, at 7th, my choices are rage or fireball. I'll be getting lightning bolt as my third level spell at 6th. This makes rage appealing. At 9th, both lists give wall of fire
Like most casters with the "change the damage type to one set by your arcana", I'll be learning spells that don't match, so I can choose damage types appropriately.
Current feat plan is this:
1st: Diehard (Got Endurance from the Shaman's Apprentice alt racial ability, along with the Sacred Tattoos.) This is better than orc ferocity by a long shot.
3rd: Extend Spell; get Efreeti fire resistances.
5th: Either Additional Traits (Get Reactive and either Seeker or Highlander, the one I don't have) or Spontaneous Metafocus.
7th: Empower Spell (since I won't really need it until 8th)
7th: Improved Initiative. Because having a +10 Init Mod is great when your go-to spell is Napalm Strike.
9th: Dunno yet.
11th: Dunno yet.
Also, I found that if you ever are considering using spells with saving throws, you want your caster stat maxed out.
By and large, rarely. I dislike "Save or Suck" spells. I have a max casting stat Sorcerer for PFS already; I'm trying to do something different here.
I just realized that I'd read the drawbacks for cross-blooded incorrectly.
I thought I lost one spell per day per spell level, not one spell known per spell level. I guess I know where my first 4,000 GP purchase will be - the Page of Spell Knowledge for Acid Arrow.
Fortunately, I never actually cast Mage Armor in my first game.
Half-Orc favored class will be the +0.5x Level for Damage.
I'll deal with the limited spells known. And since I get the spell slots, but not the spells known, I can use metamagically enhanced spells to use up the slots.
Or spend money. Unlike martials, I'm not OBLIGATED to buy six of seven cookie cutter magic items to remain effective. It'll be suckful at low levels, but the Sorcerer already has a valley of suck at levels 2 and 3. My valley of suck extends partway to level 4.