An Unreal Niagara particle system with some custom forcefield materials to create a sort of area of effect VFX meant to transition from an initial healing stage to a heavier, damaging poison phase.
The initial healing stage
The material for this phase, including luminance based on a fresnel node, a depth pass and panning textures.
The second, poisonous phase.
This material uses similar effects to the first, but uses alpha blending instead of being additive.
The Niagara system in use.
Custom textures made in Photoshop.
A couple spiral models made in Blender for the particle systems.