Wrap Up Starnheim Courser | Illustration by Andrew Mar I think theres a vast untapped answer to The Pegasus Problem in MTG: horsemanship

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You have three colorless mana in your mana pool left from your KCI activations
Legends of Duskmourn : Commander Aminatou, Veil Piercer Fates, fortunes, prophecies, and destinies
To find a booster box like this one still sealed in its original shrink-wrap is no easy task due to the low print run, few have remained sealed and even fewer have come to market, Heritage wrote in the booster boxs listing
Since youre casting the spell without paying its mana cost, you can always pay additional ones, like kicker, when casting it for free