In Mythic Adventures, there is a 6th tier guardian power called Companion Power:
Companion Power (Su)
You can imbue your bonded creature with your own mythic nature. Select one animal companion, eidolon, familiar, or bonded mount. This creature gains any one guardian path ability as if it were a 1st-tier guardian. If that ability can be used only by expending mythic power, your companion can instead use the ability three times per day.
One 1st tier Guardian Path ability is Additional Call:
Additional Call (Ex)
You learn an additional guardian's call ability. You can select this ability twice.
One Guardian Call is Beast's Fury:
Beast's Fury (Su)
As a swift action, you can expend one use of mythic power to imbue your animal companion, cohort, eidolon, familiar, or bonded mount with some of your mythic power. As an immediate action, that creature can move up to its speed and make an attack with one of its natural weapons. When making this attack, the creature rolls twice and takes the higher result. Any damage dealt by this attack bypasses all damage reduction. A creature affected by this ability can take these actions in addition to any others that it takes during its turn.
Is this selection allowed for the animal companion/eidolon/etc. to take, and if so, how does it work? Does the animal companion/eidolon/etc. grant itself an immediate action that it can take sometime the following round? Or does it grant the ability to his master?
