I started with a Skred variation, added Mind Stones instead of Coldsteel hearts after reading some Reddit suggestions.
Also added Pia and Kiran Nalaar at a Reddit comment suggestion.
A week later, Twin and Bloom bans hit, and I wanted more of an LD bent instead of Blood Moon, to help with Tron. (And save nearly 2 bills)
I was having trouble sticking with the Skred idea after not liking Boros Reckoner, and having lost the Coldsteel Hearts, my Snow permanents were down to just the lands. It occurred to me that I was already up to a fair amount of artifacts. Instead of running Skred and CIPT artifact ramp, I can run more flexible Mind Stones, and Shrapnel Blast, a card I died to many, many times in the Mirrodon Block days. Pia and Kiran can also sac artifacts for damage. Saccing can be used to "counter" a Path To Exile on a Wurmcoil, leaving you the tokens, or to pop a Hangarback end of turn to get your flyers ready for aerial assault.
Since no Snow means no Scrying Sheets, I swapped over to Darksteel Citadels, giving me another artifact to Shrapnel Blast, and an Indestructible land to target with Boom//Bust.
Sideboard
Crumbles for Tron, Valakut, BGx, other midrange decks I want to suppress, going full LD.
Chalices for Zoo, Burn, Tron, Fish. May go maindeck in place of the Pyroclasms. Boom//Bust comes out for these vs Aggro.
Shattering Spree - Affinity
Defense Grid - Trying to find something for Blue based decks. I also may use it VS Tron if the new Eldrazi Charm gains traction and they start countering your Sorceries.
Dragon's Claw - Burn, also feeds to Sac engines.
Chalices for Burn, and Zoo
Notice how these are not only effective, but feed Shrapnel Blast? Set a Chalice for 1 ASAP, later in the game when you've held them up, sac it with Shrapnel Blast, and dump any Bolts you've held onto. The same plan for Defense Grid. Run one out, wait for them to tap out for something they don't expect you to be able to afford to interact with, Shrapnel Blast saccing it, toss a Bolt wherever.
