Level 22 Arctovasilas?

Hello, recently about a week ago, there was a Fool’s Strike Event. If you have battled it, the second stage has a level 22 Arctovasilas. Why is this? Similar to the level 10 Diplodocus…

Its level was capped like in raids.

It’s different, in raids the cap never goes down a level that the creature can’t go down to, yet this bear king was 4 levels lower from its starting one

It’s the same principle. They just have to adjust health and damage by 1.05^-4.

Yes, I think you could do that in Toolbox.