Daretti, Scrap Savant and his heap of trash is a multi-player land destruction / artifact deck.The game plan is to get daretti out as fast as possible utilizing Ancient Tomb, Fire Diamond, Everflowing Chalice, Grim Monolith, Mana Crypt, Mana Vault, Mind Stone, Mox Opal, Prismatic Lens, and Sol Ring.
Second, use Daretti, Scrap Savant to his fullest extent by combining his first ability (+2 discard up to 2 cards then draw that many) with Squee, Goblin Nabob, deathspark,
Alhammaret's Archive
, Crucible of Worlds which all result in extra cards in hand instead of breaking even. Tossing away high powered artifacts at this time is also a good choice, Staff of Nin and Darksteel Forge are great in the grave early.
Now blow up some lands with your choice of destrutive force, Devastation, Ember Swallower, Rite of Ruin, Ruination, Tectonic Break, Thoughts of Ruin or Wildfire.
Time to shine, use Daretti, Scrap Savant, Goblin Welder or Scarecrone to bring out scary artifacts or to recover much faster land-wise than your opponents by recurring Solemn Simulacrum or Pilgrim's Eye.Daretti, Scrap Savant's final ability can lead to total game domination should you manage to achieve it. With enough mana, Mindslaver gives you control over every opponent's turn, Nevinyrral's Disk destroys nearly every non-land permanent every turn with little damage to your own field also super effective with Darksteel Forge.
As for the rest in alphbetical order
Artisan of Kozilek serves double purpose. Walking murder stick but also the only way to bring back a slain Goblin Welder
Caged Sun can make you almost unstoppable when cheated into play by turn 3 leading to turn 4 8+ mana.
Chandra, Torch of Defiance is just amazing, card advantage, mana acceleration, creature kill. Got it all.
Chaos Warp I don't like but kind of need in case a filthy enchantment is harassing me.
Coalition Relic just good enough to supply me some mana
Combustible Gearhulk is either 3 in the hand or three in the grave with some added smash, both help.
Contagion Engine is a pesky elf killer and +2 loyalty every turn
Cultivator's Caravan is another that just makes the cut
Decree of Annihilation, Panic button that Daretti, Scrap Savant survives
Drownyard Temple can come back if tossed, is the first land to be sacrificed and works really well with Dust Bowl
Duplicant exiles scary things and can be returned numerous times to exile more scary things
Dust Bowl kills more lands and works really well with Drownyard Temple and Crucible of Worlds
Endbringer draws cards and can prevent eldrazi from annihilating
Faithless Looting can fix a lousy opening hand, toss something to be recurred and do it again. amazing with Alhammarret's Archive
Fiery Confluence more pesky elf slaying with a side of smash your Sol Ring
Foundry Inspector, should honestly be a Metalworker
Gamble for Squee, Goblin Nabob and lose him, who cares.
Gauntlet of Power is a slightly crappierCaged Sun
Goblin Recruiter can put both squee and the welder on top of the deck that can be drawn at one time by daretti or slobad in case some wants to touch your goodies
Hellkite Tyrant toucher of goodies
Implement of Combustion is to be welded or daretti'd into something useful + 1 card
Indomitable Creativity can kill some scary stuff or roll the dice by breaking my own stuff
Inferno Titan keeps the elves down and out and can kill many different commanders
Kher Keep is in here to pop out chumps to die for daretti or to Indomitable Creativity or Rite of Ruin
Kozilek, the Great Distortion is big, counters spells and draws a full hand
Metalwork Colossus can be cast surprisingly quickly, gives opponents something to worry about so you can do other stuff
Mirrorpool, why not
Myr Battlesphere does a lot of damage and brings a bunch of sacrificable artifacts with it into play
Myr Retriever is better than Junk Diver because of its lower cmc and when all the cards are falling in place nicely Daretti, Scrap Savant can sacrifice this guy to return something big like a battlesphere, a Scrap Trawler can return a Sol Ring or Great Furnace or the likes, and then return an artifact from your grave to your hand. Value
Nevinyrral's Disk because how else am i supposed to remove enchantment. disk is also fancy with the forge
Pilgrim's Eye can never have enough mountains, especially when you keep blowing them up. Daretti, Scrap Savant can also just toss the mountain and it acts as a form of card draw.
Rolling Earthquake TAKE THAT ALL YOU NON-HORSEMANSHIP CREATURES! Earthquake was originally in here but when one bird of paradise survived it had to go
Scrap Trawler this thing is just awesome. Everything sacrificed is returned double and everything destroyed gives me something back.
Shattering Spree specifically to take out other mana producing artifacts, that's my thing
Slobad, Goblin Tinkerer sacrifice to protect the big ones but also to sacrifice in response to exile so i can bring it all back. Considering an Archbound Ravager for the same purpose
Staff of Nin the draw more pokey stick.
Steel Hellkite is an artifact creature that can kill enchantments, creature tokens and many, many more
Strip Mine / Wasteland and Crucible of Worlds and your friends hate you. Suck it Gaea's Cradle
Treasonous Ogre is an awesome card in commander, sure i'll pay 3 life per mana, so long as i win
Valakut, the Molten Pinnacle is in here because it is a mono red deck
Vandalblast kills everyone else's artifacts for a reasonable cost
Lastly Wolf of Devil's Breach is for killing planeswalkers
