Apologies if I missed a card as there only seems to be 99 in the list. Now we can see cards by card types and by converted mana costs, which might be useful for seeing things such as "What would tidewater minion transmute for". From my cursory examination, it looks like this deck is a combo deck... or at the very least packs a lot of cards that are traditionally only seen in combo decks (crackdown construct, pili-pala, knowledge pool, basalt monolist, rings of brighthearth, etc.) While a couple of the combos (Battlesphere + Deathmantle + Altar, Sword + Foundry, Navigator + Land Untapper, Niv + Lookout, Teferi + Pool, Kurkesh/Rings + Monolith) are pretty clear, could you please list out all of the combos that you are going for here? Want to make sure that I'm not missing. I have no idea what tidewater minion would be searching for, for example.
As far as possible changes...
1. You need more Ramp: Dockside Extortionist and Smothering Tithe produce lots of mana in artifact form, which may be useful. Other than that, using cards like the talisman and signet cycle (Talisman of Progress, Azorius Signet, etc) is on the cheaper end of good artifact ramp. Good old Arcane Signet is practically a must for a 4-color deck like this as well. Eventually, getting into things like Chrome Mox, Mox Opal, Mox Diamond, Mana Crypt, Mana Vault, Grim Monolith is up at the high end.
2. You need some manner of interaction. Consider cards like Bojuka Bog, Chaos Warp, Generous Gift, Toxic Deluge, Blasphemous Act, Austere Command, Cyclonic Rift, Swords to Plowshares, Counterspell, Swan Song, Mystic Confluence... the list goes on. It's especially odd in this deck as you are running Guile with absolutely 0 counterspells.
3. If you ever increase your access to tutors and card draw cards(Vampiric Tutor, Demonic Tutor, Grim Tutor, Enlightened Tutor, Mystical tutor, Gamble, Spellseeker, Phyrexian Arena, Scroll Rack, Land Tax, etc.), those are excellent additions.
4. Not sure what Deepglow Skate is there for. Even with Navigator in the deck, repeatedly boosting gemstone array or one of your two walkers seems a bit unlikely. I would personally not count on that effect. Might want to remove that and the array. Likewise, may want to remove Guile.
5. Would replace The Karn you are using with the karn planeswalker from War of the Spark to create the Mycosynth Lattice lockout combo (which I think was your intention, judging by the lack of other combos)?
6. I would replace 5-drop Teferi with the 3-costing Teferi Planeswalker that has the same needed ability for the lockdown when you can.
7. I would replace the drake with Mulldrifter
8. There aren't a ton of good targets for your copying sub-theme, honestly. 9 ETB triggers (8 not counting Breya, which you wouldn't want to copy) isn't a big number. Maybe replace one of those cards with Mechanized Production to instantly win the game with Battlesphere (8 tokens sharing the same name = victory).
9. I would dump crackdown construct. While it turns your infinite mana combos into power with an arbitrarily big attacker, your deck lacks any way to give it evasion or remove blockers (other than Niv-Mizzet Pings, I guess).
10. While I can't believe that I'm saying it, I'm not a fan of Skull Clamp here. There aren't a lot of 1 toughness creatures to turn into instant card draw.
8. There aren't a ton of good targets for your copying sub-theme, honestly. 9 ETB triggers (8 not counting Breya, which you wouldn't want to copy) isn't a big number. Maybe replace one of those cards with Mechanized Production to instantly win the game with Battlesphere (8 tokens sharing the same name = victory).
This doesn't work. Battlesphere has a triggered ability when it ETB. This ability does not resolve during the resolution of Mech Production, but after.
8. There aren't a ton of good targets for your copying sub-theme, honestly. 9 ETB triggers (8 not counting Breya, which you wouldn't want to copy) isn't a big number. Maybe replace one of those cards with Mechanized Production to instantly win the game with Battlesphere (8 tokens sharing the same name = victory).
Didn’t even realize that I had said that. I concede the point. Alternate win condition requiring one turn cycle =/= “instant win” (or “win out of nowhere, another term I’ve used in the past). No more false advertising.
1 Ashnod's Altar
1 Azorius Chancery
1 Basalt Monolith
1 Blood Artist
1 Boros Garrison
1 Breya, Etherium Shaper
1 Cackling Counterpart
1 Captain of the Mists
1 Command Tower
1 Crackdown Construct
1 Chromatic Orrery
1 Dark Petition
1 Darkwater Catacombs
1 Deadeye Navigator
1 Deepglow Skate
1 Diabolic Tutor
1 Dimir Aqueduct
1 Disciple of the Vault
1 Dovescape
1 Dualcaster Mage
1 Evolving Wilds
1 Exotic Orchard
1 Fabricate
1 Gemstone Array
1 Ghost Quarter
1 Ghostly Flicker
1 Gilded Lotus
1 Grand Architect
1 Grave Titan
1 Great Furnace
1 Great Whale
1 Guile
1 Illusionist's Bracers
1 Inventors' Fair
4 Island
1 Izzet Boilerworks
1 Karn, Silver Golem
1 Knowledge Pool
1 Kurkesh, Onakke Ancient
1 Mind Over Matter
2 Mountain
1 Mycosynth Lattice
1 Myr Battlesphere
1 Mystic Speculation
1 Nim Deathmantle
1 Niv-Mizzet, Dracogenius
1 Niv-Mizzet, the Firemind
1 Nomad Outpost
1 Orzhov Basilica
1 Peregrine Drake
1 Phyrexian Altar
1 Phyrexian Metamorph
1 Pili-Pala
4 Plains
1 Puppeteer Clique
1 Rakdos Carnarium
1 Razaketh's Rite
1 Reliquary Tower
1 Retrofitter Foundry
1 Rings of Brighthearth
1 Rite of Replication
1 Saheeli Rai
1 Saheeli's Artistry
1 Saheeli, the Gifted
1 Sculpting Steel
1 Seat of the Synod
1 Sharuum the Hegemon
1 Skullclamp
1 Sol Ring
4 Swamp
1 Sword of the Meek
1 Tandem Lookout
1 Teferi, Mage of Zhalfir
1 Temple Bell
1 Temple of the False God
1 Tempt with Reflections
1 Terramorphic Expanse
1 The Locust God
1 Thopter Assembly
1 Thopter Foundry
1 Tidewater Minion
1 Time Sieve
1 Twinflame
1 Vivid Meadow
1 Voltaic Key
1 Wandering Fumarole
1 Whir of Invention
1 Whirlpool Drake
1 Wurmcoil Engine
1 Voltaic Key
1 Sol Ring
1 Skull Clamp
1 Retrofitter Foundry
2 Time Sieve
2 Sword of the Meek
2 Thopter Foundry
2 Nim Deathmantle
2 Illusionist's Bracers
3 Temple Bell
3 Basalt Monolith
3 Ashnod's Altar
3 Sculpting Steel
3 Rings of Brighthearth
3 Phyrexian Altar
4 Gemstone Array
5 Gilded Lotus
6 Mycosynth Lattice
6 Knowledge Pool
7 Chromatic Orrery
Creatures
1 Disciple of the Vault
2 Pili-Pala
2 Blood Artist
3 Captain of the Mist
3 Tandem Lookout
3 Grand Architect
3 Dualcaster Mage
4 Crackdown Construct
4 Whirlpool Drake
4 Phyrexian Metamorph
4 Kurkesh, Onakke Ancient
4 Breya, Etherium Shaper
5 Tidewater Minion
5 Deepglow Skate
5 Teferi, Mge of Zhalfir
5 Puppeteer Clique
5 Peregrine Drake
5 Karn, Silver Golem
6 Wurmcoil Engine
6 Thopter Assembly
6 The Locust God
6 Sharuum the Hegemon
6 Niv-Mizzet, the Firemind
6 Niv-Mizzet, Dracogenious
6 Guile
6 Grave Titan
6 Deadeye Navigator
7 Myr Battlesphere
7 Great Whale
6 Mind Over Matter
7 Dovescape
Instants
3 Ghostly Flicker
3 Cackling Counterpart
Planeswalkers
3 Saheeli Rai
4 Saheeli, the Gifted
Sorceries
1 Mystic Speculation
2 Twinflame
3 Whir of Invention
3 Fabricate
4 Tempt with Reflections
4 Rite of Replication
5 Razaketh's Rite
5 Dark Petition
6 Saheeli's Artistry
Land
1 Wandering Fumarole
1 Vivid Meadow
1 Terramorphic Expanse
1 Temple of the False God
1 Seat of the Synod
1 Reliquary Tower
1 Rakdos Carnarium
4 Plains
4 Island
2 Mountain
4 Swamp
1 Orzhov Basilica
1 Nomad Outpost
1 Izzet Boilerworks
1 Inventors' Fair
1 Great Furnace
1 Ghost Quarter
1 Exotic Orchard
1 Evolving Wilds
1 Dimir Aqueduct
1 Darkwater Catacombs
1 Command Tower
1 Boros Garrison
1 Azorius Chancery
1 Arcane Sanctum
Apologies if I missed a card as there only seems to be 99 in the list. Now we can see cards by card types and by converted mana costs, which might be useful for seeing things such as "What would tidewater minion transmute for". From my cursory examination, it looks like this deck is a combo deck... or at the very least packs a lot of cards that are traditionally only seen in combo decks (crackdown construct, pili-pala, knowledge pool, basalt monolist, rings of brighthearth, etc.) While a couple of the combos (Battlesphere + Deathmantle + Altar, Sword + Foundry, Navigator + Land Untapper, Niv + Lookout, Teferi + Pool, Kurkesh/Rings + Monolith) are pretty clear, could you please list out all of the combos that you are going for here? Want to make sure that I'm not missing. I have no idea what tidewater minion would be searching for, for example.
As far as possible changes...
1. You need more Ramp: Dockside Extortionist and Smothering Tithe produce lots of mana in artifact form, which may be useful. Other than that, using cards like the talisman and signet cycle (Talisman of Progress, Azorius Signet, etc) is on the cheaper end of good artifact ramp. Good old Arcane Signet is practically a must for a 4-color deck like this as well. Eventually, getting into things like Chrome Mox, Mox Opal, Mox Diamond, Mana Crypt, Mana Vault, Grim Monolith is up at the high end.
2. You need some manner of interaction. Consider cards like Bojuka Bog, Chaos Warp, Generous Gift, Toxic Deluge, Blasphemous Act, Austere Command, Cyclonic Rift, Swords to Plowshares, Counterspell, Swan Song, Mystic Confluence... the list goes on. It's especially odd in this deck as you are running Guile with absolutely 0 counterspells.
3. If you ever increase your access to tutors and card draw cards(Vampiric Tutor, Demonic Tutor, Grim Tutor, Enlightened Tutor, Mystical tutor, Gamble, Spellseeker, Phyrexian Arena, Scroll Rack, Land Tax, etc.), those are excellent additions.
4. Not sure what Deepglow Skate is there for. Even with Navigator in the deck, repeatedly boosting gemstone array or one of your two walkers seems a bit unlikely. I would personally not count on that effect. Might want to remove that and the array. Likewise, may want to remove Guile.
5. Would replace The Karn you are using with the karn planeswalker from War of the Spark to create the Mycosynth Lattice lockout combo (which I think was your intention, judging by the lack of other combos)?
6. I would replace 5-drop Teferi with the 3-costing Teferi Planeswalker that has the same needed ability for the lockdown when you can.
7. I would replace the drake with Mulldrifter
8. There aren't a ton of good targets for your copying sub-theme, honestly. 9 ETB triggers (8 not counting Breya, which you wouldn't want to copy) isn't a big number. Maybe replace one of those cards with Mechanized Production to instantly win the game with Battlesphere (8 tokens sharing the same name = victory).
9. I would dump crackdown construct. While it turns your infinite mana combos into power with an arbitrarily big attacker, your deck lacks any way to give it evasion or remove blockers (other than Niv-Mizzet Pings, I guess).
10. While I can't believe that I'm saying it, I'm not a fan of Skull Clamp here. There aren't a lot of 1 toughness creatures to turn into instant card draw.
This doesn't work. Battlesphere has a triggered ability when it ETB. This ability does not resolve during the resolution of Mech Production, but after.