| Claxon |
It's already a pretty crappy feat to begin with because it requires someone else in the party to have rage, be raging, be next to or flanking with you, and have also decided to pick up this feat.
If you had a party made up of Half-Orc barbarians its great...for a more typical adventuring party you probably shouldn't bother.
| Avoron |
It's a pretty spectacular feat, you just need to build for it. My favorite method is to get any sort of mount, take the Ferocious Mount rage power, and give it a horsemaster's saddle. But this also makes a bloodrager dip wonderful for skalds if they grab a valet bloodline familiar and Amplified Rage.