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I have a level 1 Synthesist Summoner.

Since he has the Quadruped base Eidolon, when fused, my Summoner has a bite attack (Primary). In addition, I have spent evolution points on a tentacle (Secondary). Finally, my Synthesist carries around an Axe, with which he can make weapon attacks.

If I were to use the Full-Attack option, what attacks could I make, and at what penalties? Let's assume I want to always use the Axe, where possible.

How does this interact with the eidolon's natural attack limit? (3 at first level)

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Related:… – mxyzplk May 30 '13 at 0:13
up vote 9 down vote accepted

You can use your manufactured weapon as normal for full attacks – iteratives, Two-Weapon Fighting, Flurry of Blows, whatever.

You then get any natural weapon attacks, all treated as secondary attacks (−5 penalty to attack, Strength to damage halved), unless the limb involved in the natural attack was already used for a manufactured weapon. This usually means no Claws, but other restrictions could imaginably come into play.

Worth noting that the Multiattack feat reduces the penalty on secondary attacks to −2 instead of −5. Can be worth it if you’ve got three or more.

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So since I have a Bite and a Tentacle, I can make a full attack (1 attack) + bite + tentacle (at BAB -5). Does the Fused Eidolon's Natural Attack limit (3) apply to manufactured weapon attacks? – Raven Dreamer May 30 '13 at 1:30
@RavenDreamer No, it does not apply to manufactured weapon attacks. "This indicates the maximum number of natural attacks [...] This does not include attacks made with weapons." Source – KRyan May 30 '13 at 1:48
@RavenDreamer If you're attacking with the axe, your bite will also be treated as a secondary attack (BAB -5). Your primary natural attack(s) become secondary if you are also attacking with a weapon(s). – Glenn May 30 '13 at 17:13
You should probably correct your answer " A monk cannot use any weapon other than an unarmed strike or a special monk weapon as part of a flurry of blows. A monk with natural weapons cannot use such weapons as part of a flurry of blows, nor can he make natural attacks in addition to his flurry of blows attacks." – DanceSC Apr 11 '15 at 0:18

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