This is an old wizlab with some design elements that contradict the rest of portal-branch design. The exit is not in the same place as the entrance, and the complete absence of an explanation for the very frequent transient summoning is baffling. There is no indication that the goal of the wizlab is to speed into the centre of it and kill Wucad Mu with zero chaff to get in your way other than these transient summons, unless you look at the wiki.
Either the summoning needs a large amount of clarity added via examine text or stuff printed into the chat log (along with adding an exit at the start), or the whole wizlab needs to go.
(Yes, I lost a promising run to this, but I genuinely believe this is a problem because it didn’t feel like a YASD - it felt like the game system breaking its own rules.)