At Luz's comment Fern reaches up, shakily poking and prodding at his face. He hadn't noticed the physical changes going on with his body - but then, that's normal for him. He rarely noticed when his teeth got sharper or thorns starting growing on him, not until they were already done changing, and by then he was too worked up by whatever emotions were overwhelming him to care. Like right now, in fact, though he can feel his body slowly shifting back to his usual Finn-look with Luz's help.

He reflexively tries to take in a deep breath, realizes that oh yeah, he can't do that anymore, and settles for scrubbing his hands over his face. Geez, that was a mess. But he's feeling back here, like she's saying. Mostly. "Thanks. I... I guess I got tree senses, now," he says slowly. "I've never been able to understand other plants before."