Makes the target entity glow (like with the Glowing potion effect).
This mechanic is also an [aura].
> **[Glow API](https://www.spigotmc.org/resources/api-glowapi-1-9-1-10.19422/)** is required for minecraft version 1.16.
> Please note that this mechanic is not actually giving the *glowing* effect in any form: it will just *look* like it. If you want to check against the presence of this mechanic, you must check against the presence of the applied aura (an [hasaura](/skills/conditions/hasaura) condition con do the trick, for instance)