Hey guys,
I'm not sure Aywin should dive. Unless we have pass without trace and invisibility, he'll be obvious. That's 2 spells from the highest level we can currently cast. Maybe a less ressource intensive approach is to send Shade 9, and have invisible Svetlana check how he's doing periodically(no water breathing, but unseen). She could telepathically tell Aywin to jump in if Shade9's in trouble.
Also, Aywin will cast Aid 2x before the short rest. 6 will have their hp max increased by 5.
I can't remember who benefited from this last short rest, but I'm pretty sure everybody in the fusion team now has an extra 5 hp, including Bill!
Cheers,
Sg