Bringing Kallista's appearance in line with her new lore.

In Kallista's new lore story Invocation we have a story of a betrayed woman seeking vengeance. One part of it caught my attention, and I feel could make for an interesting addition to Kallista.

> An ethereal tether, little more than a wisp of light, linked the newly formed shade to the avenging spirit she had summoned. Through their bond, the sword-wife saw her differently, glimpsing the noble warrior she had been in life: tall and proud, her armor gleaming. Her posture was confident, yet without arrogance; a born leader, a born soldier. This was a commander that the sword-wife would have willingly bled for.

The toggle hotkey isn't really used for much if you're not playing Sona, so what if we gave it a use? What if Kallista was given both forms described in her lore. While everyone sees her as her ghostly Shadow Isles form, her tethered ally sees the warrior she once was. The player of Kallista could use the toggle hotkey to switch between the two, however it would not effect what others see.

It's hardly a necessary change of course, but it's at least an interesting one to bring up on here.