hey,
Summoner's Egg is called an egg, but its creature types only say construct. so it doesn't work with your commander.
then I would cut the whole Choose Egg section, the space can be used better.
for the "Good Changelings" section, I would reccomend to tin out here a little, at least for the creatures. you want to hit your fatties if possible.
Acidic Slime can be replaced with
Return to Nature or
Nature's Claim. Way more cost efficient unless you really think you need to kill lands. If so,
Decimate would be a good option.
To make it short, everytime a egg cracks, the table should be scared what's comming now.
In stead of
Eternal witness I would reccomend something like
Piper's Melody (if you want to choose what gets on top) or
Elixir of Immortality (in order to get your whole gy back into your lib).
Then I would add some cards that allow you either a) crack eggs yourself or b) allows you to generate more eggs.
For a) cards like
Ashnod's Altar would be good
for b)
Magewright's Stone,
Thousand-year Elixir,
Thornbite Staff (in combination with a)
All in all, no offense but in it's current state the deck seems for me like an janky deck with some expensive cards.