This is the first elemental wormhole generator I’ve seen. Are these rare? It’s like a Vladof AOE grenade with a singularity generator. If they actually pulled you in with any significant force, they might be an interesting challenge.
That’s deployed by the unique mini boss corporal Bob. There’s a challenge to kill him before he deploys his wormhole.
Is it always fire?
Yes. There’s only this one enemy in the whole game that does it.