So we're gonna do a storyline where Y'ntlotlhllzh seals Elis and her friends in a Lotus Eater Machine-style illusion. A happy world where they're all ostensibly normal teenagers. His incentive for doing this is to attempt to win Elis' affections under false pretenses, and make those feelings strong enough to continue existing when the illusion ends.

It's doomed to fail, of course.

The theme of the dream world, to keep the group entertained, is a Persona fanfiction adventure sort of thing. So Elis here is holding an Evoker and summoning her True Self.

So no, Elis isn't shorter or anything in this image, the camera's just panned upwards to make room for her Persona: Pandora, The Keeper of Hopes and Horrors.

Pandora was created by the Gods as the perfect woman. She is human, and yet not, forged by Hephaestus, and granted beauty, kindness, wisdom, intelligence, good humor, and...curiosity. She is an uncorrupted and childlike soul who accidentally releases all the evils of the world, but also releases Hope, so that man may endure.

Hope is perched on Pandora's shoulder as she controls the lid of the Box, releasing the evil within only on Elis' command, for Elis is a shell for infinite terror, but is the greatest source of Hope in all the cosmos. Thus, she is of the Aeon Arcana, for all things are possible for her, and she is truly new. The grand tapestry of existence can be made or broken at her whimsy. Her Persona can thus destroy or restore, create and ruin.

Yes, that's an Evoker. No, Elis doesn't need it. But everyone else got one and she didn't want to be left out, so she just shoots it wildly into the air for pretend and then summons her Persona with a thought.