[@Wishful Stray] What you've got here is the Lantern of Illusion. The last time a PC held this Lantern, she accidentally summoned an inn, complete with a warm fire and beds and hot food, all of which was completely tangible and believable -- until it all disappeared in an instant.

Its limitation is that it can only summon one thing at a time; if you summoned a house and then you want a sword, the house will disappear and the sword will take its place. This also means that illusions could disappear simply because your character's mind wanders: replacing a sword with a bowl of noodles, if her stomach growls.

I'm telling you this so you don't have to wait for me to control what the Lantern does every time, and you can describe what Aslynn has summoned, accidentally or otherwise. :)

The red (fire), green (armor) and white (flight) Lanterns are similarly predictable -- but the blue (spirit) is complicated, haha. The blue Lantern is basically everything from charisma to mind-control. The blue's strength is in gathering allies and commanding armies, but wielding it to its potential depends entirely on Anise's state of mind. She's getting it, though. ;)