Supreme Incarnation

You become a nexus between the mortal and spiritual realms through which your apparition can embody its full might. You gain a 10th-rank apparition spell slot. In addition to heightened versions of your apparition spells, you can use this slot to cast Avatar. When you cast avatar in this way, you do not become an avatar of a deity; rather, your primary attuned apparition incarnates itself using your body, transforming you into the avatar described in your primary attuned apparition's entry.