I am going to go out on a limb and say that control in modern lacks a "catch all" a snug safety harness if you will.
Imagine that you are a tight rope walker and as you steadily cross the rope you slip and fall you feel extreme panic, but you know that you have a safety harness that will save you from your brief slip up. (In legacy force of will, and either toxic deluge or terminus are able to provide the safety net just encase you were to fall into a large pointy object or a massive pit of small goblins. In the previous standard supreme verdict and detention sphere caught creatures and plains walkers respectively.
Modern control has the powerful cards, but lacks the safety harness. Its as though the options that we can pick from are to big, to small, or for some reason just does not fit quite right. (in magic terms to situational). As stated by previous people you can not catch all the decks in this format, so by having a mid range or combo game plan you can hope to win before a deck slips into the weakness of your deck. Designated HARD control cannot win fast enough to prevent that.
Modern is not a forgiving format, and it is very easy to punish people for a slight mishap, control really lacks a way to recover from such a mishap that is not either far to situational to be viable, or sometimes your in a spot where a card is just bad (like spellsnare can be rarely, but occasionally)
When I played scepter I used a blue white tempo deck that ran 4 main meddling mage, so I could name abrupt decay or combo parts if you want a more controlling version nevermore may be able to work
I am not a huge fan of unsummon in this deck I think lighting bolt or dismember would be better removal or the aether spell bomb would be better synergy with the rest of your deck if you want a bounce spell.
If you want to be really silly you can do what I did when I first started playing modern and use momir vig simic visionary with a draw card when a creature enters like primordial sage then you can getwever you lay a green creature card search your deck for a creature and put it into your hand but it's not a very good deck.
You probably want to go for a deck more similar to normal elves with your own twist
I suggest finding room for
4x Heritage Druid
4x Nettle Sentinel
cutting 3 Gyre Sage and 1 Akroma's Memorial plus something else
cut one primal surge for a craterhoof behemoth (then you still have 2 expensive win cons but primal surge can't fizzle)
cut 2 Boseiju, Who Shelters All for 2 nyxthos shrine to nyx
My friends and I have wanted to do tron dragonstorm. You only need two storm now with the doublestrike and karthus to kill them. green tron can assemble the mana fast. Thoughts?
As for if there is a way to make Lightning Bolt, Lightning Helix, Geist of Saint Traft and Elspeth, Sun's Champion work together
I would say no with that Elspeth. However, if you used the 4 mana elspeth instead it would work.
Tezzerator is a tier 2 deck that really rewards knowing the format super well, but i don't really advise building it.
Amulet combo is shockingly hard to play and rewards knowing the deck.
Of the ones you listed either UWR deck is a good deck for what you are looking for.
Pretty much your blue permission and dig becomes threats and more spot removal spells. You play some sort of naya control/midrange deck it's pretty fun
More seriously good infect creatures are 1/1s
Imagine that you are a tight rope walker and as you steadily cross the rope you slip and fall you feel extreme panic, but you know that you have a safety harness that will save you from your brief slip up. (In legacy force of will, and either toxic deluge or terminus are able to provide the safety net just encase you were to fall into a large pointy object or a massive pit of small goblins. In the previous standard supreme verdict and detention sphere caught creatures and plains walkers respectively.
Modern control has the powerful cards, but lacks the safety harness. Its as though the options that we can pick from are to big, to small, or for some reason just does not fit quite right. (in magic terms to situational). As stated by previous people you can not catch all the decks in this format, so by having a mid range or combo game plan you can hope to win before a deck slips into the weakness of your deck. Designated HARD control cannot win fast enough to prevent that.
Modern is not a forgiving format, and it is very easy to punish people for a slight mishap, control really lacks a way to recover from such a mishap that is not either far to situational to be viable, or sometimes your in a spot where a card is just bad (like spellsnare can be rarely, but occasionally)
You probably want to go for a deck more similar to normal elves with your own twist
I suggest finding room for
4x Heritage Druid
4x Nettle Sentinel
cutting 3 Gyre Sage and 1 Akroma's Memorial plus something else
cut one primal surge for a craterhoof behemoth (then you still have 2 expensive win cons but primal surge can't fizzle)
cut 2 Boseiju, Who Shelters All for 2 nyxthos shrine to nyx
I would say no with that Elspeth. However, if you used the 4 mana elspeth instead it would work.
Amulet combo is shockingly hard to play and rewards knowing the deck.
Of the ones you listed either UWR deck is a good deck for what you are looking for.
24-lands
3 prime time
4 scapeshift
4 path to exile
4 lightning bolt
4 knight of the reliquary
4 lighting helix
4 sakura tribe elder
4 search for tomorrow
3 obstinate baloth
2 scavaging ooze
Pretty much your blue permission and dig becomes threats and more spot removal spells. You play some sort of naya control/midrange deck it's pretty fun