'Snow' has since been quite specific to Ice Age and the two or three expansions that are tied to it
Granting all your creatures Haste means that The Fire Crystal will be usable in most Commander decks that have predominantly Red spells
Picking a General that fits your play style and basic lands to match is a natural point of departure, because it allows the 100 card checklist to start strong, unified, and focused
Caretaker's Talent, Myrel, Shield of Argive and Mondrak, Glory Dominus produce tons of tokens, and join Esper Sentinel, Elesh Norn, Grand Cenobite and Urborg, Tomb of Yawgmoth as some of the pricy options that you may want to substitute for on-budget options
This Is How It Ends, a new form removal for black
There are plenty of discard synergy pieces in Red that make all our discarding even more powerful: we have plenty more ways to turn our cycling / looting into card advantage with Containment Construct, Conspiracy Theorist, Bag of Holding, Currency Converter, and Veronica, Dissident Scribe