That win condition is a particularly popular one in the Commander format once infinite mana has been assembled
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Spell Pierce hits cards of any mana value and Flusterstorm is the best way to win a big stack battle thanks to storm, but Minor Misstep has some upsides too: it's a hard counter, so unlike Spell Pierce you don't have to worry about your opponent paying for it in the late game and resolving their spell and it can hit creatures along with spells, which is huge in a world where Ragavan, Nimble Pilferer is in one-third of decks
Additionally, were running payoffs for said counters, like Esper Sentinel and Hopeful Initiate
Many of these cards feel like true playmakers, not just solid inclusions in existing decks, but build-around engines or format-shaping threats
If you like the amount of ramp you've got but want to replace Nissa's Pilgrimage for something better, put in a different ramp card in its place