Mythic Monstrous Companion (Mythic Feat)

And here's my final invention to give my boy a mythic peregrine/panther griffon as an animal companion. I took inspiration from the Mythic Leadership feat from Rogue Genius Games. Enjoy!

Mythic Monstrous Companion (Mythic)
Your monster companion participates of your mythic nature.
Prerequisite: Monstrous Companion^CaC, character level 7, 2^nd mythic tier.
Benefit: Add your mythic tier to your effective druid level to determinate your monstrous companion’s effective cohort level.
The magical beast you gain as a cohort from the Monstrous Companion feat is a mythic creature with a mythic tier equal to ½ your own mythic tier. As a rule, a magical beast’s cohort level is equal to twice its challenge rating. So, for example, to gain a mythic griffon (CR 5/MR 2) you must have an equivalent druid level of 13 and be at least mythic tier 4.
Additionally, if your magical beast cohort dies you may replace it in 24 hours by calling on the source of your mythic power. However, doing so causes you to have 1 fewer uses of mythic power per day for the next 30 days.
Special: This feat counts as the Mythic Leadership feat for the purposes of prerequisites. A character cannot have both Leadership/Mythic Leadership and Monstrous Companion/Mythic Monstrous Companion.