Ninja: Walk in shadow.

[Sleigh]

We don't know if Sneak Attack is actually viable, as amazing as it sounds. Hiding Heavies you by 50% (meaning you might have to walk like a snail to get to boss) and it doesn't work on enemies with "special sight," which may mean Trick and Sneak Attack are purely PvP/open-world if that means the attacks won't work on those enemies.

[JakzChurchill]

Snip

But with Suiton it appears as so you don't go into hide (previous combat video can't remember which one) which makes Trick attack a better damage ability than Raiton. Although I do agree stating a fight in hide will lose more dps than it would gain so going straight in Huton would be more beneficial.

but for Ninjutsu it seems like huton (70s Buff) -20-> Suiton -2->Trick Attack (60 Recast) -18-> Raiton -20-> Huton -20->Suiton -2-> Trick Attack... would be the most effictive method, with Kasatsu being used exclusively with Raiton.

Could be completely off the mark here though, definitley need to get amongst it next week.

[Leonus]

That 50% heavy is coming off of nin already enhanced speed and the slow probably wears off upon connecting an attack with said target along with the invisibility.

I would also imagine that sneak att and trick attack abilities will work throughout the fight.