Ooooo Biolume Egg is very interesting, with impressive theme, and art. My only concern is that flipping it will be challenging in Simic. Granted Koma can do it, but I don't have many other methods of doing so. Still, I'll find room for it. The scry will assist in modulating draws to avoid bricking with too many high CMC sea monsters early game.
See, small sea monsters can be made. They don't all need to be 6+ drops.