What happens if you have multiple Yuumi's W onto each other?

You get one super buff yuumi

I wonder if Riot realized that Yuumi would be a champ that limits their design space for custom game modes?

[sg-lulu]

I imagine you would have one godlike Yuumi. But it might be limited to a single yuumi per champion, making two pairs of yuumi and one yuumi who will die alone

They creates a blackhole and sucks all of Summoner's Rift into it.

Unless you block it with Yasuo's windwall coz that shit is broken af.