Wanda + Open
The black holes didn't last long before they imploded in on itself. Yet they were dangerous for anything or anyone caught in the gravitational pull of it.
Wanda holding this one steady so nothing else was sucked in from the surroundings seemed to work after the singularity struggled against the energy surrounding it. Before closing, it drained some of the red magic within before blinking out of existence.
Unfortunately, the Dark Elves - both inside and outside of the Great Hall - have more than one grenade on their person. But in this case, Wanda's plan worked, and several grateful party goers nod their thanks to Wanda as they flee to safety.