mtg red proliferate cards Modern Horizons Mythic Rare Yawgmoth, Thran Physician #116 Sacrifice another creature Proliferate Red by leoking Visual

This allows you to bypass the casting costs of high-impact permanents like Portal to Phyrexia or Blightsteel Colossus

You dont have to use it when it enters the battlefield, and anyone who might want to use it (if its not going to tutor for your game-winning card right there) wont want to destroy it

Schematic foil: $8 to $10 Mox Amber Popular within the Commander and Modern formats, Mox Amber is great for mana fixing in MTG decks with an abundance of legendary creatures

She has Friends Forever and is the only card in the Stranger Things crossover to have more than two colours, immediately making her an appealing Commander

though some commanders like Faldorn, Dread Wolf Herald use discarding as part of the cost, the card itself doesnt care about discarding