The Myriesly CL-P e5-7383 planetary nebula, named Fenrisúlfr or "Fenris Wolf" by early explorers in the Galactic Centre, contains an intense viride Lagrange storm cloud, the Verdant Maelstrom, which houses families of Q06-Type Anomalies as well as prasinium and flavum metallic crystals.

While most viride Lagrange storm clouds are known for their bright green hue, this storm cloud lacks the same color, possibly given to its presence within a planetary nebula or the particular wavelengths of light cast by the neutron star at the system's center.

The Q06-Type Anomalies within the cloud can pose a hazard to explorers if they fly close to them, as they deal damage directly to a ship's hull, bypassing shields. The lightning within the storms is also hazardous, as it can damage shields and briefly interfere with a ship's systems. The view from within the Lagrange cloud is nonetheless awe-inspiring, with brief surges of electrical energy flashing in the dark.

Myriesly HN-I c23-1708, Body 1 (cover image) and Myriesly HN-I c23-3118 offer the most prominent views of the nebula, which emits light along red and violet wavelengths. The resulting effect gives the nebula a pink hue along its bow shock.

A handful of systems near the Fenrisúlfr nebula also contain Notable Stellar Phenomena, though none are as violent as the Verdant Maelstrom itself. Myriesly HN-I c23-9160 contains both roseum and rubicundum Lagrange clouds with solid mineral spheres, prasinium metallic crystals and Q06-Type Anomalies. In addition, Myriesly HN-I c23-1064 contains an NSP within the B ring of Body 2.

The planetary nebula's presence has also caused Electricae to form on nearby planets, including Myriesly HN-I c23-6193, Body A 4 a.