TCGs propensity for chaining splashy effects together
Winters abilities seem to encourage a classic GB midrange playstyle where we run a bunch of powerful, loosely synergistic permanents with different card types and a focus on self-mill
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Heres what Id suggest: The Ozolith is an incredibly important tool because it not only preserves the +1/+1 counters put on your now dead creatures, it also translates them onto your commander, which saves you time and resources if its killed during the game
1-Mana Cantrips Renegade Tactics Ancestral Anger Warlord's Fury Rile Telim'Tor's Edict Crash Through Crimson Wisps Expedite Overmaster Might of the Meek Impolite Entrance You can run these for their main effects, but theyre generally slightly sadder versions of Opt and Consider for spellslinger and storm decks
The biggest downside here is that it shares the mana cost of your Commander, and its pretty expensive for a single card