Monogreen "I want to make Teferi suffer" (Historic)

The deck is what I've come up with to deal with all these Teferi and Ugin decks that simply won't stop flooding Historic (gotta get a whole lot of wildcards for that). Nearly the entire is comprised of things that to the best of my knowledge Arzorius Control or Bant Ramp do not want to see, in the hopes of causing their players maximum suffering.

First, the early creatures: Arboreal Gracer and Paradise Druid are there to help us accelerate our gameplan (and druid has hexproof when untapped so it helps against all that insufferable bouncing), Scavenging Ooze is there to eat Uros, things that they want to revive with Elspeth Conquers Death and present a growing threat on occasion (it helps against other decks that want to revive things as well), while Garruk's Harbringer is there as a strong early creature that can draw us cards and is protected against variants that play Black. Finally, Stonecoil Serpent is a masterpiece that dodges a lot of things, from Teferi bouncing to Elspeth Conquers Death to even Ugin, and can stonewall Uro and Dream Trawler.

The rest of the creatures are Gemrazer to get rid of artifacts and enchantments such as Elspeth Conquers Death, Shifting Ceratops to just laugh at anything blue and hopefully enter with haste, while also stonewalling Uro and Dream Trawler, Questing Beast to maintain momentum while killing Planeswalkers and finally, Carnage Tyrant as a big threat that can only be killed with either boardwipes or creatures (or forced sacrifice, but that's another deck entirely).

The non-creatures are Gaea's Blessing, which not only draws a card, but it helps us get our threats back in our deck, while being an amazing defense against Teferi Mill (if it enters the graveyard directly from the deck, it shuffles the entire graveyard back to the deck, which undoes all mill progress and then some). Vivien is there mostly to allow us to play creatures from the top of our deck, but her abilities are really good as well while we have them.
The previous comment is because we also play 2 copies of Immortal Sun in our main deck. The card is amazing, shutting down all planeswalkers loyalty abilities, reducing the cost of our creatures, powering them up and drawing us extra cards each turn, while also surviving Ugin. The downside to it is that it comes rather late and shuts down all planeswalker loyalty abilities, not only the enemies (we can still play creatures from the library with Vivien though).
Lastly, the Great Henge gives us yet another way to draw cards, ramp and power up our creatures, as well as the only way we can regain life.

For the sideboard, aditional copies of Gaea's Blessing, Gemrazer, Scavenging Ooze and Immortal Sun for matchups heavy on the things they counter, 4 Vine Mare's for Monoblack and Rakdos Sacrifice matchups (it's the only way we get past Phyrexian Obliterator), 2 Heroic Interventions to protect against Boardwipes, 2 Damping Sphere and 1 Arasta of the Endless Web for matchups very heavy on instant and sorceries, such us Monored Burn, Izzet Prowess and Reclamation decks.

Finally, as for possible changes I'd make for the deck, perhaps swapping main-deck Immortal Suns for Vivien Arkbow Ranger would be wise, to give us a bit of Creature/Planeswalker removal, access to our sideboard creatures (which would need changing the sideboard) and not shut down the abilities of our other Vivien. I'm also a bit iffy on Arasta and the Damping Spheres (although Spheres shuts down Nissa's ramping).

Any reccomendations for the purpose of improving the deck and making Teferi players suffer more are very much welcome.