Editing Warhammer 40,000/9th Edition Tactics/Death Guard (section)

===Nurgle Daemonkin===
As of Chaos Daemon’s 9E codex, the buffs of Poxbringers and Epidemius (amongst others) apply only to {{W40Kkeyword|Legiones Demonica}} units, [[RAGE|squatting your cross-faction]] {{W40Kkeyword|Daemon}} and {{W40Kkeyword|Nurgle}} keyword synergy. All hope is not lost however, as allying in a single detachment (of up to 25% the total PL of your army) now ''doesn’t interfere with special army-keyword rules''. This means one thing: '''CONTAGIONS ARE BACK ON, BABY!'''
* Take a Psyker - your familiar friend the Poxbringer is nice and cheap, or cough up 300 points for your GUO. Either way, give them '''Shrivelling Pox''' from the Warprot Discipline. That -1 Toughness stacks with your Death Guard '''Contagion''' for -2 total on one enemy unit. Have your DG psyker buff a friendly attacking unit '''Putrescent Vitality''' for +1 Strength and maximum cheese.
* Never overlook the Feculent Gnarlmaw. Whilst they only buff {{W40Kkeyword|Legiones Demonica}} units and are now targetable, their harmful aura only targets ''enemies''. This means you needn’t worry about invalid allies, being beholden to the {{W40Kkeyword|Nurgle}} immunity. Sadly, these nasty trees now compete with the Miasmic Malignifier for that Fortification Network. The Malignifier actually buffs your dudes and gets Contagions, but the Gnarlmaw may last longer depending on who you’re up against thanks to Daemon Saves.
* Summoning is gone, but now your allied Daemons have special Deep Strikes. Sadly, none of our Characters have the {{W40Kkeyword|Warp Locus}} keyword, because [[Derp|GW forgot about Death Guard when writing the CSM codex]] (Master of Possession has the keyword, for instance). Still, you can drop Plaguebearer bombs with a sprinkle of Nurglings, spawn swarms of Plague Drones and Beasts, or bring Slimux for terrain soiling (can’t plant Gnarlmaws though), all for the cost of a patrol detachment. 
* As above, '''CONTAGIONS ARE BACK ON, BABY!''' Just make sure your allied detachment doesn’t exceed 25% PL of your army’s total Power Level (or you lose Contagions). Read those rules carefully.