"Look!" says Heat, cheerily, gesturing towards the lava flow.

Which now has a head. Cuddles oozes his way back out and onto Heat's lap before looking up at the company. "Magcargo..." the pokemon drawls.

"Huh," says Zero. Cuddles had been half that size and shell-less the last time he'd seen the creature. Now the magma slug was a full two feet long and had a thin shell that looked like it was mostly ash and very thin rock. "It got bigger."