Quote Originally Posted by squeekenator View Post
Fighter 20. You get eleven bonus feats. That's almost as many as every other core class combined. You could get +1 to hit on eleven different weapons, PLUS your standard feats from levelling. If you really want to shatter the campaign, play a human for ANOTHER feat.

Consequences will never be the same.
Though they help, feats aren't the way to game breaking proportions.

Quote Originally Posted by Kalaska'Agathas View Post
Druid 10/Planar Shepherd 10 - now there's an option that doesn't sacrifice power for flavor - she gets both, and in large amounts. Just pick your plane of Dreams (or anything else with a lot of good Outsiders to Wildshape into, and of course Flowing Time) and you're set.

Of course, I prefer Druid 6/Prestige Ranger 4/Planar Shepherd 10, with Sword of the Arcane Order and Natural Spell of course, for CL 18 Druid and Wizard casting and full Cleric casting (from some angel or another) - but that's just me.
I believe the original forum post stated the build had to be core.