Precisely my thoughts. The fact that this exists is so cool, but it's clear some more tuning would have to be done for "proper" balance.

'Subterranean Crush' is exactly 'Flesh to Dust' but two mana cheaper and 'Silent Splendor' is 'Dramatic Reversal' cranked to 11. An instant include in any blue deck, I need it.

Yeah, it's typical LLM output in that it superficially makes sense but if you actually know what you're talking about it really doesn't.

Dark Ritual (it already exists and does something else, Storm players are super triggered right now)

Sorcery - {B}

You may cast a black or red instant or sorcery card from your hand without paying its mana cost. Excuse me?

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Winged Egg

{2} Artifact Creature - Egg 0/2

Whenever you cast a noncreature spell, put a +1/+1 counter on Winged Egg

What? A similar effect is on Crackling Drake of UR Spells fame, going for {U}{U}{R}{R}.

You also have a {1}{U} enchantment that makes you a 1/1 token with Flying whenever you draw a card. -- Bitterblossom already destroyed a format once :( --, and a {1}{U} instant with "untap all creatures and lands you control".

Winged Egg is uncanny in exactly the same way that generated art is - the feeling is the same, it’s uncanny valley material.

Well, for winged egg specifically, sprite dragon is a better card that already exists for a similar mana cost, so it's not too far out. But yeah, those other cards would never be printed.

I suspect some fine tuning could solve this, or perhaps somehow train on 17lands.com pick orders to establish power levels?