Nest Invader could be a good acceleration to cast TK in t3 in a hand without eldrazi temple or dorks. He could replace 1 birds or talisman of progress because he is a better topdeck.
Did you tested Scion Summoner? He has toughness 2 (like nest invader), cost 1 more (harder to be destroyed by EE), makes a 1/1 token and has devoid.
Against heavy aggro meta I'm using a thragtusk mainboard in place of the 4th drowner (I don't have the 3th explosives) and its very good. The extra life and many beasts 3/3 can turn many games in our favor.
The free slot on sideboard i'll give walking ballista a try.
There's no doubt that Ewit is the better card if we are allowed the time to abuse it. I have sung its praises before and believe it to be a strong card against any deck looking to go past turn 5. Ewit is probably better than Rmage against GBx, Shadow, UW control (mostly >50/50 matchups). However, those decks aren't the decks we're being pushed out by: Storm, Elves, Dredge, etc.
Against super fast decks like elves or affinity, we just need SOME form of interaction, because we can reasonably stabilize against 1/1s most of the time. The key against those decks is to get them off of payoffs like Master / Overseer / Ezuri / Archmage, at least until we can find a more permanent stabilization like worship. If we've already resolved a path or EE, we're on our way to stabilizing. Ewit doesn't help us to stabilize if one of those hasn't already resolved. But adding 2-4 reflector mages just increases the % chance we have interaction in our opener. The combo can also be active on turn 3 with Rmage instead of turn 4 with ewit.
It's not as good against merfolk because of Vial, but it's probably worth cutting a few drowners cause it's really hard to get to 6 mana against spreading seas.
I think it's better than Ewit against Coco decks only on the basis of being able to mana screw them. On the play, Turn 1 dork into Turn 2 Rmage bounce their birds is the strongest possible interaction we can have against them.
The mana to support Rmage is a little awkward since we're low on both W and U. But most draws with dorks are able to support it, so a Rmage shell should have 5 or 6 dorks. This is an argument to keep it as a sideboard card, where postboard we can name human on our caverns.
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One example of Batterskull being unexpected was in a Grixis shadow match where I knew my opponent sided out his Kolaghan's. The moment he saw the Batterskull he just paused and stared at the board for a few seconds. Other cases I would bring in Batterskull but not Worship would be things like UW control and Skred. My main argument is that E-tron runs it, and it can only turn 3 batterskull on a tron draw, and we are much more likely to have 5 mana on turn 3 via dork-skyspawner or dork-dork. With those draws we are semi-functionally a bant stoneblade deck
I think we could use 1x linvala on SB. She hits mirror and many bad matchs: elves, affinity, abzan company, vizir combo. Lavinia is also nice, but needs a displacer to keep hitting the opponent.
This is my SB:
2 Reclamation Sage (blood moon, tron, affinity, sinergy with Displacer)
1 Thragtusk
1 Worship
1 Blessed Alliance (maybe a dromoka's command)
2 Rest in Peace
2 Mana Leak (can hit many threats and gain time against burn, control, knightfall. Stroke is better against tron, but mana leak can catch them at least one time)
1 Grafdigger's Cage
1 Negate
1 Disdainful Stroke
2 Stony Silence
1 Ugin, the Spirit Dragon (flex slot,i'm testing because can win some bad matchups if he enters the battlefield - even with a resolved blood moon. could be a Lavinia or All is dust)
I think now we dont have some mirror matches, then we could leave some mirror breakers (like elspeth) and focus on kill conditions or hard impact cards, like, ugin, all is dust or lavinia.
This is the reasons for the choices:
4 chalice maindeck - relic is a powerful card, but chalice can win games
1 ratchet maindeck - sometimes we need a versatile removal. Could be a mind stone.
3 wastes maindeck - waste is very important to play around blood moon, and many decks has path to exile and ghost quarter.
2 revokers sideboard - revoker is a pitthing needle that can attack and be protected by spellskite and chalice. I take the risk.
I suggested Collected Companny due to 8 dorks, and with that many mana CMC 5 could not be so expensive, and gives to you a good lategame plan against grindy decks, but I did not notice that you uses 3 gaddock.
As you dont use liege/voice/finks, the second gavony township would be very useful turning your guys in finishers.
Did you tested Scion Summoner? He has toughness 2 (like nest invader), cost 1 more (harder to be destroyed by EE), makes a 1/1 token and has devoid.
The free slot on sideboard i'll give walking ballista a try.
+1 for bannner
2 Reclamation Sage (blood moon, tron, affinity, sinergy with Displacer)
1 Thragtusk
1 Worship
1 Blessed Alliance (maybe a dromoka's command)
2 Rest in Peace
2 Mana Leak (can hit many threats and gain time against burn, control, knightfall. Stroke is better against tron, but mana leak can catch them at least one time)
1 Grafdigger's Cage
1 Negate
1 Disdainful Stroke
2 Stony Silence
1 Ugin, the Spirit Dragon (flex slot,i'm testing because can win some bad matchups if he enters the battlefield - even with a resolved blood moon. could be a Lavinia or All is dust)
I think now we dont have some mirror matches, then we could leave some mirror breakers (like elspeth) and focus on kill conditions or hard impact cards, like, ugin, all is dust or lavinia.
-3 Serum Visions
+3 thought scour
-1 Abrupt Decay
+1 maelstrom pulse
4 Verdant Catacombs
1 Breeding Pool
2 Blooming Marsh
4 Polluted Delta
1 Forest
2 Darkslick Shores
1 Twilight Mire
2 Swamp
1 Watery Grave
2 Overgrown Tomb
Creatures = 19
4 Architects of Will
4 Grim Flayer
3 Snapcaster Mage
2 Hooting Mandrills
4 Tarmogoyf
2 Tasigur, the Golden Fang
2 Thoughtseize
3 Abrupt Decay
3 Fatal Push
4 Inquisition of Kozilek
2 Liliana, the Last Hope
4 Stubborn Denial
3 Serum Visions
1 Obstinate Baloth
1 Kalitas, Traitor of Ghet
3 Fulminator Mage
1 Golgari Charm
2 Go for the Throat
1 Thoughtseize
2 Surgical Extraction
2 Nihil Spellbomb
2 Negate
4 Verdant Catacombs
1 Breeding Pool
2 Blooming Marsh
4 Polluted Delta
1 Forest
2 Darkslick Shores
1 Twilight Mire
2 Swamp
1 Watery Grave
2 Overgrown Tomb
Creatures = 19
4 Architects of Will
4 Grim Flayer
3 Snapcaster Mage
2 Hooting Mandrills
4 Tarmogoyf
2 Tasigur, the Golden Fang
2 Thoughtseize
3 Abrupt Decay
3 Fatal Push
4 Inquisition of Kozilek
2 Liliana, the Last Hope
4 Stubborn Denial
3 Serum Visions
1 Obstinate Baloth
1 Kalitas, Traitor of Ghet
3 Fulminator Mage
1 Golgari Charm
2 Go for the Throat
1 Thoughtseize
2 Surgical Extraction
2 Nihil Spellbomb
2 Negate
3 Cavern of Souls
2 Gemstone Caverns
3 Wastes
2 Sea Gate Wreckage
4 Blinkmoth Nexus
4 Ghost Quarter
4 Eldrazi Temple
1 Urborg, Tomb of Yawgmoth
Creatures (28)
4 Reality Smasher
4 Simian Spirit Guide
4 Eternal Scourge
4 Eldrazi Mimic
4 Endless One
4 Matter Reshaper
4 Thought-Knot Seer
1 Ratchet Bomb
4 Chalice of the Void
4 Dismember
2 Spellskite
1 Endbringer
2 Phyrexian Revoker
2 Ratchet Bomb
2 Spatial Contortion
2 Warping Wail
4 Relic of Progenitus
This is the reasons for the choices:
4 chalice maindeck - relic is a powerful card, but chalice can win games
1 ratchet maindeck - sometimes we need a versatile removal. Could be a mind stone.
3 wastes maindeck - waste is very important to play around blood moon, and many decks has path to exile and ghost quarter.
2 revokers sideboard - revoker is a pitthing needle that can attack and be protected by spellskite and chalice. I take the risk.
I suggested Collected Companny due to 8 dorks, and with that many mana CMC 5 could not be so expensive, and gives to you a good lategame plan against grindy decks, but I did not notice that you uses 3 gaddock.
As you dont use liege/voice/finks, the second gavony township would be very useful turning your guys in finishers.