Animal Companion using mighty roar and greater mighty roar?

[CyberThread]

How good/bad is a feat spending on a druid companions ...compaion


To allow it to use mighty roar feat, and greater mighty roar ((1d6 shaken affect off of charisma and more stuff for greater mighty roar)).

Would it be an okay then or really to underpowered to consider?

((I am very aware of animals low CHA and would have to use dire animals to even break even))

[Coidzor]

It'd be more worth it if you had more uses than merely once a day.

[CyberThread]

once per encounter?

[Coidzor]

Well, it wouldn't be getting spammed to try to end the fight against anything that wasn't fear immune that way, but still potentially useful.