Are we allowed to include 3PP material?
If so, I'd mention the "pointer finger" cantrip from 1001 spells. basically, a laser pointer out of your finger.
A quickened pointer finger should allow you to auto succeed at any ranged touch attack, such as the one for finger of death or disintegrate.
That make sense? It would be like having a laser sight on your finger gun, letting you line up your shot before you take it!
Well lets try to make Battering Blast a bit more deadly (but a one pony trick):
Orc bloodline Sorcerer level 20
Feats:
Spell focus evocation (prerequisite)
Mage's tattoo (+1 caster level)
Spell specialization (+ 2 caster level)
Bloodmage initiate (+1 caster level)
Empower Spell metamagic
Intensified Spell metamagic
Maximize Spell metamagic
Spell Perfection (1 free metamagic & double feat bonuses)Traits:
Magical Lineage (lower metamagic cost 1 level)
Wayang Spellhunter (lower metamagic cost 1 level)Magic Items:
Flawed Orange Prism (+ 1 caster level)
Otherworldly Kimono (+4 caster level)
Prayer Beads - Karma (+4 caster level, needs UMD skill check to use)So a Intensified, Empowered, Maximized Battering Blast (caster level 37 – remember feats are doubled due to Spell Perfection) only use a 4th level spellslot.
It creates 7 blasts of 7d6+7 (+empowered +maximized) = 7x7x6x1,5+49 = 490 force damage for a single 4th level spell.
No save and no problem with most SR due to the high caster level.
The icing on the cake is the 7 bullrushes of CMB 37+60+cha bonus (use the highest).If you like to go to the extreme on increased caster level see this ridiculous thread:
http://paizo.com/threads/rzs2r6pu?Challenge-Highest-caster-level#1
Would Evoker 19/ Sorc 1 eke out slightly more damage? CL drops to 36 but should not affect the number of blasts and gives one blast +9 to damage. Or RaizielDragons example of sorc with blood havoc mutation? Although that damage is already so high you'll one shot nearly every monster there is on the beastiary.