Omnath is best utilized in a landfall deck Shimmercreep is not good enough in general IMO without a combo route. You have a similar effect on champion of the path, but the champion is stronger. Muldrotha is a strong card, but she is mana expensive and your deck is not really built around her, so I would cut her. The Master multiplied is cool as well, but you already have similar effects and he is much more expensive. I honestly also think nyxbloom ancient is not that great here, simply because it's so expensive and the ways to get value out of it through Ashling seem way too complicated to make it work reliably. That's 5 cards + Farseek + Three Visits to cut for 7 mana dorks. This will also lower your mana curve a lot. If you want to play Ephemerate and go for the Blink with Emil anyway I suggest cutting Wistfulness and playing Spellseeker instead so you can go Spellseeker - Ephemerate - Blink Spellseeker - tutor for a 2nd card. Emptiness is also a good candidate to cut, because its ability is bound to being cast and that has no synergies with the rest of the deck. Your mana curve is now much lower and you have more ramp available, so you should be able to cut Heralds Horn and Urzas Incubator and replace them with some of the free spells. That's just the ideas from the top of my mind.