I think you could drop the blue aspect entirely and try to fit in some more hand disruption to slow the game down and get rid of threats you can't easily deal with . Also maybe more underworld connections. Seems really good in this deck
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Quite an interesting idea, reminds me of something my friend had long ago. I think you might be better off running some cards like azorious charm or divination instead of some of those creatures. It gets a tad redundant and those cards could help you draw into aetherlings and help you make sure you hit your land drops. Also maybe either adding dissolves or replacing the render silent with dissolves, I think the scrying could be a big help in the same vein. Would also help against non-creature threats