|Randuril Star Voter Season 6, Star Voter Season 8, Star Voter Season 9|
I got a completely different view of this beastie, seeing it as more of an enormous soap bubble (which might have even been Isaac's source of inspiration). This isn't the first monster that has a fly speed but does not seem to actively "fly" - almost everything from the elemental plane of air does likewise. I like the unusual nature presented here. It is a unique entry against the other competing designs.
No offense intended to the other candidates, who have put forth their own great efforts, but we don't really need another iteration of an undead something-or-other. We do need to make examples like this that go a long way to keeping the sense of wonder alive in this game.