Hello again! Here is the sideboarding guide I was asked to make for the deck. It's very crude but I hope it can start a conversation what works in different matchups and what doesn't. I used my own list as an example, hope you don't mind.
Main
4x Chalice of the Void
4x Crucible of Worlds
3x Ensnaring Bridge
3x Mox Diamond
1x Powder Keg
3x Ratchet Bomb
4x Smokestack
4x Sphere of Resistance
4x Tangle Wire
4x Lodestone Golem
4x Ancient Tomb
1x Buried Ruin
4x City of Traitors
1x Ghost Quarter
4x Mishra's Factory
4x Mutavault
3x Rishadan Port
1x The Tabernacle at Pendrell Vale
4x Wasteland
Sideboard
1x Caltrops
1x Cursed Totem
4x Phyrexian Revoker
1x Powder Keg
1x Ratchet Bomb
2x Spellskite
1x The Tabernacle at Pendrell Vale
2x Tormod's Crypt
2x Zuran Orb
RUG
Fast Delver is the worst! Blow it up right away and get some lock pieces out. After sideboard they have Ancient Grudge, so prepare for this and if you can always attack the green manasource (they have total of 3 Tropical Islands) first, shuts down A.Grudge flashback but also every other creature except Delver.
Out:
-1 Smokestack
-2 Mox Diamond (don't want to lose 2 cards against A.Grudge)
-1 Sphere of Resistance
In:
+1 Tabernacle
+2 Powder Keg / Ratchet Bomb
+1 Spellskite ?
BUG Shardless
Here I usually try to lock down their Shamans and try to keep them from getting enough mana to cast Tarmogoyfs or Lilianas.
Out:
-4 Sphere of Resistance (they have wasteland, could screw your own mana)
-2 Lodestone Golem (dies to Liliana too easily)
In:
+4 Phyrexian Revoker (shuts down Deathrite Shaman & Liliana)
+1 Powder Keg
+1 Cursed Totem
Miracles
Here we just have to worry about not dying to fast Monastery Mentor beats and land the Smokestack ASAP. Also don't be afraid to raise the Smokestacks to 2 counters. Revoker names the Divining Top of course.
Out:
-2 Ensnaring Bridge (Doesn't really help against Monastery Mentor tokens)
-1 Powder Keg
-1 Tabernacle
In:
+4 Phyrexian Revoker
Omnitell
Seems that Omnitell is still a deck even without Dig Through Time. Our maindeck is pretty good against them so it's not so bad even if we don't have good sideboard cards against them. Try to land the Chalice on 1 and Lodestone Golem for a fast win.
Out:
-1 Tabernacle
-3 Powder Keg / Ratched Bomb
In:
+4 Revoker (for just trying to punch in the damage fast)
Sneak Attack
They usually lose to a resolved Ensnaring Bridge in the first game. So try to land one safely or keep it in hand and reveal it to Show and Tell. After sideboard they will usually bring some bounce spell like Echoing Truth or Wipe Away. Sometimes they even side out Show and Tells for Through the Breaches, so resolving the Ensnaring Bridge fast is really important in game 2&3.
Out:
-1 Tabernacle
-4 Powder Keg / Ratchet Bomb
In:
+ 4 Phyrexian Revoker (Naming Sneak Attack or Griseldaddy)
+ 1 Cursed Totem (stops Griseldaddys card draws)
Jund
This is one difficult matchup. They have Dr.Shamans, Decays, Wasteland, discards and burn spell to kill our revokers and golems. I don't even have a good sideboard strategy against them, let's try to work something out?
Out:
-4 Sphere of Resistance
-2 Chalice of the Void (if you're on the draw)
In:
+4 Phyrexian Revoker (Deathrite Shaman & Liliana)
+1 Cursed totem
+1 Tabernacle
Lands
Lands is not so bad what it first seems. On the play the Chalice on 1 also does a lot of damage to them. Best way to victory is often Lodestone Golem, but it may take a hit from Krosan Grip after sideboard.
Out:
-1 Tabernacle
-3 Rathed Bomb / Powder Keg
In:
+2 Tormod's Crypt
+2 Spellskite (Decay decoy)
ANT (Storm)
Our mainboard is pretty sweet against these kinds of decks.
Out:
-1 Tabernacle
-3 Ensnaring bridge
-2 Rathed Bomb / Powder Keg
In:
+4 Phyrexian Revoker (Naming Lion's Eye Diamond)
+2 Tormod's Crypt
Elves
Try to get the Chalice of The Void x=1 here as soon as possible.
Out:
-2 Ensnaring Bridge (They're going to find the Reclamation Sage at some point and instakill with Behemot)
-2 Crucible
-3 Tangle Wire
In:
+1 Cursed Totem
+1 Tabernacle
+2 Ratched Bomb / Powder Keg
+1-2 Phyrexian Revoker (I don't even know what is the best target to name here?)
Burn
This is a bit hard because of Goblin Guide, Price of Progress and especially Sulfuric Vortex! Try to get one of your bombs to 3 because Vortex will otherwise end you! It also stops the lifegain from Zuran Orbs.
Out:
-3 Ensnaring Bridge
-2 Tangle Wire (This doesn't necessarily do anything since they have so much instant spells)
In:
+2 Zuran Orb
+2 Spellskite
+1 Ratched Bomb / Powder Keg
MUD
Our big brother! Try to get to the infinite Wastelands via Crucible of the Worlds since they have only nonbasic lands in their deck.
Out:
4 Lodestone Golem (These are useless here)
In:
+4 Phyrexian Revoker (Gotta shut down that Metal Worker before it's too late)
Reanimator
Out:
-3 Ratched Bomb / Powder Keg
In:
+2 Tormod's Crypt
+1 Cursed Totem (Stopping Griselbrands card draws)
Grixis Delver (Grixis Control?)
I'm pretty new to this matchup but I feel that their number one wincon is either Delver or Young Pyromancer. Try to land the Chalice on 1. Also good to know, they don't usually have more than one or max two basic lands in their decks.
Out:
-1 Lodestone Golem
-1 Ensnaring Bridge
-2 Sphere of Resistance
In:
+2 Rathed Bomb / Powder Keg
+1 Tabernacle
+1 Caltrops
Foodchain
Try to disable their Shamans and get a bomb to 3 counters to blow up the Food Chain. They have 3-4 Abrupt Decays in the mainboard, so prepare to lose some artifacts. Sphere of Resistance disables their infinite mana combo with Food Chain and Misthollow Griffin.
Out:
-2 Ensnaring Bridge (They have ways to bounce this back to your hand if they combo out)
-1 Tabernacle
In:
+1 Cursed Totem (Deathrite Shaman)
+2 Spellskite (Divert Decays)
Death and Taxes
Pretty hard matchup (or maybe even the hardest) because of Thalia, Wasteland and maindeck Phyrexian Revokers. Bombs are obviosly good here if they don't get revoked. Try to land a fast Ensnaring Bridge and take control of the board before it's too late.
Out:
-4 Sphere of Resistance (These will F*** up your game combined with Thalia from the opponent)
-2 Lodestone Golem
In:
+1 Caltrops
+2 Powder Keg / Ratched Bomb
+2 Phyrexian Revoker (Aether Vial, Jitte)
+1 Tabernacle
So what do you think?