I really think one can have enough Heralds for your Chaos Daemons. Not only for the “Daemonic Possession” on the Warp Storm table but in general. I can’t take credit for the little conversion at all. I’ve seen Dr. Festus getting a new Plaguebearer head in a White Dwarf some issues ago. So I copied the idea as I really liked it (with another head though). The paint job has to be the most gory and vile I ever did in more than twenty years of miniature painting. I love it, haha.
His poor victim is of course a soldier from Argos.

Virul'anius the Herald of Thuk'ydor and Nurgle.

Virul’anius the Herald of Thuk’ydor and Nurgle.

He is an expert on all poisonous brews and a gruesome butcher of the living.

He is an expert on all poisonous brews and a gruesome butcher of the living.

Here you can see the little conversion before he got primed.

Here you can see the little conversion before he got primed.

The Great Unclean One Thuk’ydor is still on his way to the Aleator Sector, thus sending all of his four Heralds to spread Nurgle’s gospel among the living. Here you can read about Virul’anius and the other three:

The Great Unclean One Thuk’ydor has got a lot of possibilities to spread his Master’s corruption across the stars. One of them are his four personal Heralds. The first and most favoured is his voice – Hal’itosus. The fat and lazy Herald is a vile sorcerer who proclaims Thuk’ydor’s will from his rotting throne. His duty is to watch over his Master’s most beloved children, the Nurglings. He has to take care of them, give them names and guide them.
Then there is the silent Herald Vel’os. He is the link between the Great Unclean One and the limbo realm known as the Forge of Souls. Offering souls to the Daemons of the Forge and receiving their favours in return. His daemonic-mechanical arm is prove of this bond and a cursed Blight Drone was the first new unit in Thuk’ydor’s ranks.
Virul’anius is the third of them. He is a master of all kinds of poison and disease ridden brews. The Herald is also a gruesome butcher who won’t stop testing his newest creations on living tissue. Unlike Vel’os he is always happy to have a chat about his newest creations.
The youngest Herald is Fri’gus within his Master’s troops who has yet to prove himself. But Thuk’ydor wouldn’t have chosen him from the ranks of the Plagueridden if there would be no potential in this specific Daemon.

Heralds of Nurgle – Hal’itosus, Vel’os, Virul'anius & Fri’gus.

Heralds of Nurgle – Hal’itosus, Vel’os, Virul’anius & Fri’gus.