How does BAB Breakdown for an Eidolon with Multiple Natural Weapons

eidolonpathfinder-1esummoner

I'm trying to figure out how my Quadrapedal Eidolon attacks per turn break down BAB-wise since I've never used the Summoner previously. (Evolutions Below specifically).

It came with a Bite and Claw evolution as a Qped and I've added another Claw evolution giving it 2 Sets of Claws and a potential bite. At level 12 Eidolon has 5 Max Attacks. I'm trying to wrap my head around how I would pace a turn with the Eidolon. currently, at Lv12 it has a BAB of 9/4, I see that an Eidolon can make a potential Max of 5 Attacks.

How does that roll out dice-wise with BAB and the Natural Weapons? If my Eidolon were to Declare a Full Attack against a target: What attacks are rolled at Full BAB and what attacks would be rolled at the half BAB of 4? As I see it now I would make 1 Claw Attack at a +9, and 1 Claw at a +4 would I make the other 2 Claws and the Bite at the +4 or with No Attack Bonus?

I do understand that every 2 Successful Claw attacks proc a Rend roll and every successful attack procs Energy Attack (Acid) so I get that.. but I am unsure about how I would roll out the Max 5 Attacks in play.

Evolutions:
Pounce: 1
Claws (2): 2
Spell Resistance: 4
Large: 4
Rend: 2
Energy Attacks (Acid[1d6]): 2
Improved Damage: 1

Best Answer

Natural attacks don't work the same way BAB-based weapon attacks do.

Natural Attacks

Most creatures possess one or more natural attacks (attacks made without a weapon). These attacks fall into one of two categories, primary and secondary attacks. Primary attacks are made using the creature’s full base attack bonus and add the creature’s full Strength bonus on damage rolls. Secondary attacks are made using the creature’s base attack bonus –5 and add only 1/2 the creature’s Strength bonus on damage rolls. If a creature has only one natural attack, it is always made using the creature’s full base attack bonus and adds 1-1/2 times the creature’s Strength bonus on damage rolls. This increase does not apply if the creature has multiple attacks but only takes one. If a creature has only one type of attack, but has multiple attacks per round, that attack is treated as a primary attack, regardless of its type. You do not receive additional natural attacks for a high base attack bonus. Instead, you receive additional attack rolls for multiple limb and body parts capable of making the attack (as noted by the race or ability that grants the attacks).

TL;DR you refer to a table and find out which natural attacks are primary or secondary, and treat them differently based on that.

Bite and Claw are both Primary attacks. If you have 1 bite attack and 4 claw attacks, your attack routine is bite/claw/claw/claw/claw, so 5 attacks, all using 9 bab (+ whatever bonuses) and adding your full strength modifier to damage (instead of half). Both the Bite and Claw evolutions specify that these are primary attacks, to avoid any confusion from the tables or monster creation rules.

However.

The claws evolution states that you can only have one set of claws on legs. Ergo you'll need your eidolon to have a pair of arms, to take it twice.

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