While both cards offer backup ways of making creatures, the main reason they are in the deck is to make Puresteel Paladin, Kazuul's Toll Collector, Fervent Champion, and Vulshok Battlemaster better
Promo Card Prefixes Promo cards use specific prefixes to identify their era: SVP : Scarlet & Violet promos SWSH : Sword & Shield promos SM : Sun & Moon promos XY : XY promos BW : Black & White promos The promo number follows the prefix (e.g., SVP 076 is the 76th Scarlet & Violet promo card)
Win with Impact Tremors / Gobin Bombardment / Fervor, whatever
Instead, the seller smiled and called it a crazy factory error, trying to hype it up for extra bids
Game A Lot
You can find a nice discount on LP cards, as most sales hover around the $40 mark, with MP only dropping into the $35 range