| Cyberonyx |
Here is the most brutal combination I've ever found:
- 1 level in unchained barbarian (gets you Rage)
- 1 level in Vivisectionist Alchemist (gets you Mutagen and Sneak Attack)
- All other levels in Synthesis Summoner:
Take the Biped, and the following evolutions, and at level 6 you get:
Eidolon
BAB: +5
Ability Scores: +4 Str, +2 Dex, +2 Con
Fort (4), Refl (1), Will (4)
AC: +4 natural armor
Max Attacks: 4
2 Claws (1d4+Str)
Special: Darkvision, Evasion, Devotion
Evolutions (9+2(Extra Evolutions feat)+2(Half-Elf favored Class bonus)): 13 Evolution points total
Level 1 evolutions:
Improved Natural Armor (2): +2 AC
Claws:
Improved Natural Attack (Claws)
Magic Attacks: Natural attacks overcome DR/magic
Level 2 evolutions:
Ability Increase: +2 Str
Limbs
Rend
Energy attack: All natural attacks add 1d6 electrical damage
Therefore, you get four claw attacks per round. You also get a standard strength bonus of +5, with the mutagen and rage adding +2 each to your attack. Cast Bull's strength to get another +1 to your Strength bonus. Your Eidolon's BAB is +5. Thus:
Four attacks in a full round action
Attack Bonus = BAB + Str + Modifiers = (5+1) + (4+1+2+2) + (2+1+1-2) = 17
Damage:
One Claw: 4 + 1 + 2 + 2 + 2 + 4 + 1d6 + 1d6 (electricity) + 1d6 (SA) + 1 = 16 + Dice
Every time two claws hit: 1d6 + 1.5 x (4+1+2+2) = 1d6 + 13 (15 if large)
The practical upshot is that you will be dealing around 80 HP of static damage per round, plus approximately 10d6 HP of dice damage. And that's not counting sneak attack damage either. You should be able to put down almost anything your party encounters within two rounds.