So theres no doubt Legion of Everblight are our toughest matchup. The Wilding Way has some good stuff but is now quite old so I thought it'd be good to play catchup and see what people are tying these days to counter our nemesis.
Back in the day my go-to was pBaldur. His feat is good ( does not ignore cover) and he can put beasts to ARM where legions beast shooting is lessened, Megaliths healing and stones can counter the little damage and Baldur can happily be on fire usually. The feat also stops the real heavy hitters from getting the drop on you (An angelius or seraph are not going to take out a heavy where a scythean or carnivean will).
Since then we got Baldur 2 who can keep ARM high enough across the board to help mitigate their shooting but he does struggle actually killing their beasts since Legion beasts are just plain better than circle beasts (For defensive ability, remember tenacity!) and circle are famously pillow fisted. Baldur has no way to buff damage output so Legion beasts actually out tank us.
Also one of the main reasons Baldur2 was good is totally countered by the Naga.
Wills Morvahna list was a totally new way of playing Morvahna for a lot of us. The list is almost totally shooting impervious, which really helps and even legion struggle to deal with those Bloodtrackers. In my experience Epic Lylyth can kill the full unit on feat turn, other than that Legion cannot kill them all even ignoring stealth and the like and even then, keeping one model right back out of range helps regrow a unit and you can get good use from them. The witchdoctor will really help here. Undead, tough bloodtrackers that regrow will be awesome, its going to rocket this list to top tier.
Sadly, as soon as this list started to show up on the international radar, PP gave legion the counter. If one of your opponents lists is eVayl, purification is still an auto lose. Basically as soon as we had this list which is almost an even match, Legion got the perfect hard counter to her.
eKrueger is my latest attempt. Stormwall is a good spell for shutting down legion shooting and his feat can buy you time or set up a strike. He can use guardians too who can tank most legion attacks and are good enough to take out the big heavies but simply cant hit the flyers.
Sadly I really like eKrueger to be my warmachine counter. He assassinates like nobodys business with pEiryss and disruption is awesome.
His main defense also simply doesn't work against eLylyths feat, expect to just lose that turn if you forget!
Druids can be a good legion counter, they can be immune to beast shooting again and counter magic also stops a lot of the legion big nasty tricks like rampaging a beast out to be killed, hoarfrost and the like.
Sadly, PP must have known this because they inexplicably gave their main shooting unit Hunter. Striders are a perfect druid counter, if you can't deal with striders your druids will just be dead turn 2.
For this reason I'm thinking of pKrueger too, he can chain lightning the striders, keeping druids intact to tank shooting, also with good use of chain lightning, feat or even tornado you can scalpel out legion support pieces like shepherds, forsaken and now the succubus.
Getting Krueger right out front to feat on support pieces is dangerous but between lightning strike and shifting stones its usually possible to get him back to safety.
Finally, there is the battle engine. It will be killed by any legion beast (Even their lights!) in melee, so you need to shield it but being immune to shooting is still good. Remember healing and things like shield guard for it, they really help. Its one of the best BEs offensively, 3 really good shots is great and the different types (AoE, Spray and leap) mean you always have something tricksy to try. It only really shines against beasts with Curse of Shadows but will happily take out loads of infantry so team it with druids to kill striders and be immune to fire.
These are just some random thoughts, so I want to hear what other people are doing to counter our worst matchup. I spoke to Circle players at the UK masters and one suggested eKaya for uber long threat and piece trading... I havent tried that yet so what else is out there?