Important question: does the poison-type using toxic buff hit behind subs. People said that it has perfect accuracy now and that it hits flying mons too, so does it bypass substitute?
no, it doesn't. ekans' toxic failed to work through a substitute.
random other things:
sweet veil:
-both its holder and its ally pokemon cannot use rest while it's out.
-if a sleeping pokemon is switched in while a sweet veil pokemon is out, it remains asleep. similarily, if a sweet veil pokemon is switched in while its ally is sleeping, it remains asleep.
belch:
-in addition to being able to be used repeatedly once a berry is consumed, belch can still be used after the pokemon has switched out.
rototiller:
-it is not a field effect like the terrains- it's a boosting move like swords dance and its ilk, except it's applied to every grass type in play, including your opponents. it gives +1 to attack and special attack.
-it works on the user as well, though there doesn't seem to be any actual grass type that learns rototiller yet (i tested this using forest's curse on a dugtrio).
ion deluge:
-unlike the abilities refrigerate, aerilate, and pixilate, ion deluge does not boost the power of normal moves it converts. a lv 45 conkeldurr with 123 attack using facade vs a 77 defense ampharos did 20 damage twice in a row, fitting into the expected damage range of 19-23. if ion deluge did add a 30% boost, it should have done 25-30 damage.