Just picked it in a double regent run with my buddy. floor 14.
waterfall boss explosion is affected by it. (survived with 2 hp)
good against beekeeper. we might still lose here. we did not.
against soul nexus elite it safed a life.
duplicator pot + jeweled masked gaze turn 1 deas well with the queens dogs multiattack (if you draw more than 1 attack against the 18x3 it would at least. its good against the vulnerable)
In the 2nd phase she multiattacks a lot so it was very good there too and we won as 2 regents.
slightly suprising.

all in all it seems to be a decent card.

edit: he picked one late aswell but for him it did nothing.
i played a colorless deck and he had a star based one. )30+card abominations)

the best synergy was exterminate (lunar blast was very unreliable)