It's lifeless. As far as Asphodel's freespawn goes, they're kinda odd... Lots of attacks, better MR than most chaff, and only fatigue-based attacks. You really can't use them like Ermor's legions, since there are some things they are simply not at all effective against. And even the things they ARE effective against, it's generally best to give them some non-manikin help.
However, unlike Ermor, they also get some big fat bastards from time to time, like mandragora beasts or just some dead elephants. Pretty sure they also get some sacred spawn, but that's hardly worth bothering with in any real way.
Their mages can be a bit beefy, and recuperation means that they can shrug off feeblemindedness or whatnot, although that's not really a huge selling point. Paths are rather limited though, so you're gonna want some diversity in there from other sources. You've got loads of death though, so feel free to supplement your manikins with other deadites who actually hit things that've been knocked out by the sleep vines, and you've got lots of nature too so you can GoR anything that looks like it'd be a nice thug, which can be particularly fun seeing as they keep the sleep vine attacks even when kitted out with weapons.
Outside of that, you've got all those lovely stealthy, recuperating, better-than-human soldiers available to Pan, so raiding and harassment are big deals. The difference is, as Asphodel, you also get a bulk of freespawn that can serve as a distraction or as blockers on your frontier while the lively troops cause hell behind enemy lines. Asphodel's spawn aren't meant to really kill anything, they just wear the enemy out by requiring more magic blasting, dishing out loads of fatigue damage, and having a special version of mass regeneration available as soon as you get someone with 4H.
I'unno, I'm just pulling this out of my ass.