Incase you don't know, this is Starlight Cradle:
http://wiki.spiralknights.com/Starlight_Cradle
It's a top-tier Status so that's why I believe that it should be exclusive to Tier 3. A bit like Concrete Jungle, the third level, Briar Bone Barrage can only be played in T3, if you did Concrete Jungle in T1 or T2 you wouldn't be able to play it. Same as Dark City, Stygian Steeds.
I don't know about others but I'd love to see a Sloom. :D
Is sleep fixed yet? No? Then we still got a problem.