This deck is capable of beating any deck out there. It is capable of achieving infinite life, infinite mana, infinite draws, infinite mill, infinite damage, and infinite land destruction, all by turn 2
This is the modern reinterpretation of the old 'eggs' deck. The way you used to play eggs was you would spend turns 1-3 laying 'eggs' like
Chromatic Sphere
, then sacrifice them all and draw your deck, then use
Second Sunrise
to get them all back and repeat the process, using wincons like Codex Shredder to create an infinite loop, and things like Altar of the Brood to kill your opponent.
Buuut,
Second Sunrise
had to go and get banned, because the original eggs was too good. But, the deck can be adapted around this, and with Faith's Reward and Open the Vaults, all the deck really needs is a good way to generate extra mana to cast Vaults, which is where Krark-Clan Ironworks comes in.
Key interactions:
Reshape With Reshape, we can sacrifice any artifact and pay 0 mana to bring a
Lotus Bloom
into play ready to crack, since Bloom has a cmc of 0. You can pay 1 to grab any egg or wincon you'd like. This is a key part of pulling off a turn 2 or 3 victory, as you will often use Lotus Bloom to accelerate to 4 mana so that you can cast an early Krark-Clan Ironworks
Krark-Clan Ironworks which brings us to Ironworks. Ironworks is how you'll generate an obscene amount of mana, and is the key to us generating infinite mana. It's also a good way to sacrifice Ichor Wellspring for a free draw.
Combo Interactions:
The combo is pulled off by chaining casts of Faith's Reward and/or Open the Vault. Inbetween, you should be sacrificing as many permanents/artifacts as you can to take full advantage of these effects.
Codex Shredder this is how you're going to get Reward and Vaults back into your hand. It's helpful to establishing a combo-lock, but it's not absolutely essential, since you can and will draw into more copies with so many draw effects. (You'll eventually be drawing your entire deck, or at the very least most of it).
Faith's Reward This is the big kahuna of the deck, it brings back any permanents that entered the graveyard in the last turn. Which opens up some fun tricks:
Ghost Quarter is an absolute all star in this deck. You can use it defensively against your opponent at any time, but you can and should also use it as part of your combo. Since it can target any land and sacs itself, if you have an infinite reward/faith/shredder loop going, you can use it offensively to destroy every single land in your opponent's deck. Sure, they get a basic every time, but they're going to run out of basics to fetch eventually. You can also turn ghost quarter on your own lands, either targeting a Darksteel Citadel during a non-combo turn to fix your mana, or on any one of your lands as a form of mana acceleration during a combo turn. (Sac GQ, Destroy the land, get a new land, then bring back GQ and the first land with Faith's Reward)
Pyrite Spellbomb 1 wincon, spellbomb can be recycled over and over to achieve infinite damage.
Banefire Works with Krark-Clan Ironworks to bring games to an end quickly, can also technically deal infinite uncounterable, unpreventable damage.
Codex Shredder you can also use shredder offensively if you already have multiple copies of reward/faiths, and if for whatever reason you can't kill your opponent because of damage, then you can loop shredders for an infinite mill approach.
Sunbream Spellbomb If you are facing a deck that can put out infinite damage, you can use sunbeam to generate infinite life.
Sideboard tech:
Defense Grid, Silence, Leyline of Sanctity: This is your suite of proactive combo defense. For use against decks that might be able to interrupt our combo turn, nothing is better than starting with a Silence.
Echoing Truth, Disenchant: Reactive defense, gets rid of permanent hate cards, hopefully long enough for us to combo out.
Emrakul, the Aeons Torn Alternative wincon if infinite mill, infinite damage, and infinite land destruction just aren't enough to get the job done.
When playing with this deck, you're going to want to keep a pen and paper with you to count your mana. Similar to Amulet Bloom, you're going to end up with tons of mana, both colorless and colored, and you need to keep track carefully to pull off the combo.