Gesalt druid / monk i want to do massive melee damage. Whats a good build to use ?

[Lastoutkast]

5 level, half orc, 25 buy point.

[ElMustacho]

Read this and you'll be ok.

[Cuup]

Level 1 feat: Razor Tusk - Gives you a Bite Natural Attack
Level 3 feat Weapon Focus (Bite) - prerequisite for...
Level 5 feat Feral Combat Training (Bite) - This allows you to treat your Bite attacks as Unarmed Strikes for the purposes of feats, abilities, etc. Proceed to Flurry of Bites. When you use Wild Shape, choose something with one big Bite attack.
As you progress, take 1-2 levels of Barbarian for Rage, and take

Now you can equip yourself with Amulet of Mighty Fists and it applies to your Bite. When you're high enough level, make sure to have a couple Strong Jaw spells prepared.

[My Self]

Go Unchained Monk instead of regular monk. Or Barbarian (Invulnerable Rager) instead. If you're feeling up for it, you can take Bloodrager, which allows you to stay as a Monk.

[Weirdo]

I second Feral Combat Training (Bite) and Unchained Monk. The latter gives you full BAB/HD, a better flurry, and style strikes, all of which improve your melee ability. Gestalting with druid restores the good will save.

Keep in mind that after the recent errata FCT does not allow you to use your monk unarmed strike damage with the selected natural weapon, so the guide ElMustacho posted is a little out of date.

[Lastoutkast]

Would I need to take fct again to add claws to the attack routine?

[Paladin of Baha-who?]

You could, but it might not be helpful. Having additional natural weapons doesn't give you more attacks in a flurry of blows, as you can make all of the attacks in a flurry with a single weapon. Also, there are advantages to having a single natural attack: you get 1.5x STR to damage (except in a flurry) and 1.5x Power Attack damage (even in a flurry).

You can avoid having to use a feat if you take the alternate racial trait Toothy that gives you a bite attack.