Traits

The skeleton of the sphirix is visible inside and glows through.

If the grifix has Sphirix Pattern Winter Coat, Sphirix Pattern Night Glow or Sphirix Pattern Timberlight that will usually reflect the skeleton of the grifix.

Defined as any animal that currently exists on Earth.

Animals like the Dodo Bird, Tasmanian Tiger or the Aurochs.

Defined as anything that went extinct after the year 1500 AD.

Animals like the mammoth or smilodon.

Defined as anything that appeared after the extinction of dinosaurs, but went extinct. Includes mainly the megafauna that went extinct around 10.000 years ago during the end of the last ice age.

Everything that roamed once the Earth during the time of the dinosaurs or longer ago, but went extinct at some point.

Mythical Creatures like the Hydra, Kraken, Kitsune etc.

Does not include creatures with equine parts, any hoofed animals parts, or human parts.

Does not include any species which has been shown as being sentient in the MLP:FiM franchise.

These are creatures like ponies, griffons, dragons, kirins, hippogriffs, deers, etc. Basically, every species which has been shown as being sentient in the MLP:FiM franchise. Includes any animal with hooves and any mythical creature that has parts from animals with hooves.

Refers to an ADULT grifix having a free sphirix shape.

Refers to children that haven't gone through the Sphirix Shape Ceremony.

Summary:

You can use god sphirix shapes if the sphirix is the soul of a creature that died. But you have to also design the character that died and became the sphirix. You don't need to have rights or an available GOD trait to use this, but you have to put in the extra work of also designing that character. This can be used by anybody who is allowed to use legendary traits.

Explanation:

Ghosts of all beings roam the Forest of Darkness, the World of Neant, lost, forgotten, forgetting. They have no recollection of their past lives, all memories being forgotten by time itself. They sometimes get hooked by livng beings, attached to them, they remember nothing but the life of that who they follow. They have no sense of self, they believe they follow their own person around. 

When one gets hooked by a grifix, sometimes the grifix's magic solidifies around the ghost instead of the grifix's sphirix. That way, the grifix and the ghost both believe they are one and the same, the ghost living as the grifix's sphirix. When that happens, the sphirix is unable to change shape even at a young age, always having the shape of their past self. The sphirix remembers nothing of their old life, being convinced they are in fact the sphirix of that grifix, but it can have a perssonality far different from the girfix, which usually doesn't happen in the case of an actual sphirix.

If you want your grifix to have a god sphirix, this is a way you can do it. However, you will be asked to provide a design for the sphirix in their past life, alongside a bio. They will be a full right charater part of the grifixverse. They will also have to get approved separately from the grifix.

This can be used by anybody who is allowed to use legendary traits.

If you want the sphirix to have recollections of their past life, you will have to justify it.