There were formations all around the room to absorb lightning. If Lucifer fired any bolts, before they could even reach them, they were going to be absorbed by the formations near the wall.
This was what gave so much confidence to the Warlocks.
They had effectively made Lucifer's lightning and his wind useless, which were claimed to be his strongest abilities.
There was also his Decay which they knew about, but that was easy to avoid. All they needed was to make sure that they didn't let him touch them.
They knew that Lucifer was being a fake tiger at the moment. He was going to cave in. And after capturing them, they could swiftly take him out.
"One!" Joan started his count.
The other Warlocks also took their positions.
"Two..."
"Before I say three, why don't you try testing your lightning and your wind?" Joan suggested, wondering if Lucifer didn't know yet.