[Jack Simth]

Beholder: Basically, although there's a limit to how many you can target at one critter (three, I think, I'd have to look it up) - so the when you drug someone, give them the finger, and try to rip them into atoms, and they still don't get it, you can't try the others until next round.

Jason's corporeal on the Ethereal Plane. He's on both the Ethereal and the material, and as he's corporeal on one, he can still cast normally. Creatures that lack something normally required for spellcasting that can cast spells do so anyway, substituting body movements for gestures, using components that are simply in contact with their body, and replacing standard verbal components with other noises as appropriet, similar to a Wildshaped Druid with natural spell - so the Couatl can cast spells with Somatic components despite not having hands. However, like the Wildshaped Druid, when you change your form, you don't pick up that natural bypass automatically. In general, if it's got an Intelligence score above 3, and doesn't say it can't speak (it is possible to use a double-negative properly, really!), I'll let you use Verbal Components. For Somatic, I'll be looking at the picture of the critter - wraiths don't have proper hands, sorry. Material and Focus components will be right out in most cases, as they will have a strong tendency to merge.

And that was with passing one or two of your saves, and not being the target... just picture what would have happened if you had done the most damage to it recently....