6.84 changes:
* Moment of Courage counterattack chance from 16/18/20/22 to 25%
* Moment of Courage lifesteal from 20/40/60/80% to 55/65/75/85%
* Moment of Courage cooldown from 0.9 to 2.7/2.1/1.5/0.9
* Added Aghanim's Scepter upgrade to Legion Commander: Duel lasts until either Legion Commander or her target dies. Ends if duelists are ever more than 2,000 range apart.
shes better with lower levels of MoC now but has lower potential damage in a duel now
so, yeah, shes probably a little better with level 1 MoC in the jungle. A lot of jungle legions don't even skill overwhelming odds (bad idea that skill owns, esp against new pl) so you have the potential to walk out of the jungle at 11 with max Press the Attack and Moment of Courage, which is still good damage.
In terms of new builds I imagine it's still largely the same. Blink is still good, shadowblade MIGHT be more worthwhile with the new Silver Edge, given that you can disable PA blur or void backtrack, or even troll fervor, pretty much for the duration of your ult (no scepter). The scepter upgrade I don't see being all that worthwhile though. Maybe if you are playing against like a medusa and build tanky to just hold her down while your team kills her, but that's simple enough without the aghs. Maybe you can buy the new solar crest (super medallion)? For a while I was playing offlane slark with a medallion and using medallion on supports and purging the debuff off myself. It worked really well and it might work on legion with her purge. Being able to have evasion on a hero like that is probably pretty good. BoTs were already pretty good on her (tp to every fight) and they might be even better now. Deso got buffed too, which is pretty decent on her. Can't forget blademail. Blademail duel will kill an AM every time.
The hero still suffers from the same issue that she always did: its hard for her to win duels solo (particularly early)
One thing that I've done with my friend is pick skywrath with legion. REALLY easy for him to land the ult and more or less guarantees the victory unless you go in 2v4 or some similar dumb shit.