Now she has a leaf.

Is it behaving unleaflike in any obvious way? 

Nope! It's just leafing about.

She tucks it into her belt to have Yttren look at later. Unless it stops existing or something.  

Anything else noteworthy up here, before she heads back down?

N—

—yep!

A small fluffy creature, almost the same colour as the clouds and seeming to give off tiny trails of vapour as it moves, steps out from behind the tree. It is not at all clear whether it was behind the tree a minute ago.

{hello} it... says, for lack of a better word, in an abstraction-of-a-voice like the abstraction-of-text that happens when she picks up the small items. The actual sounds that it makes are the soft noises of a gentle breeze brushing past one's ears.

...She kneels to get closer to the creature's level. 

"Hello. Who are you?"

{i am cloud spirit—who are you—?}

"I'm Leuska! I'm a siren, sirens can fly--" she flutters her wings "--and me and my friends landed in the forest a ways off from here by accident and we're trying to figure out what's up with this place." 

{look for forest spirit} it advises. {—in forest—and water spirit in water—and stone spirit underground—we help}

"Help how?"

{we know things}

"Do you know why everything is in a grid?"

{no—forest spirit might}

"Okay. What do you know?"

{i know about magic}

"Oh, useful, tell me about magic."

{magic has eight elements—fire/infernal water/blood air/celestial earth/shadow—fire water air earth are natural elements—infernal blood celestial shadow are monstrous elements—}

It scampers to the edge of a cloud and points with its little three-fingered paw at the hazy purple area.

{that place is shadow place—other places on this island are natural places—places aligned with monstrous elements have stronger monsters}

"Unpack 'monsters'?"

{monsters are dangerous—they try to hurt you—if you kill them they leave things behind and some of the things are magic}

"Like that goo thing that jumped at me? --A goo thing jumped at me and went splat and left behind something called gel."

{that's a monster—a slime}

"How threatening are most monsters compared to slime?"

{slimes are the least threatening ones}

"Fuck. Okay, everyone else needs informed pronto, I'm heading back down, want to come along?"