Boosters have always had 15 cards (well, most of them, anyway) because that's what Richard Garfield chose to do with Alpha , years before designing for Draft was even a thing
And then post becoming the Monarch on another turn you can prevent all damage to him and grow in size with +1/+1 counters on him
Clues, Food, Treasures, Junk, and incidental 1/1 tokens from other effects are everywhere
Can You Play Brutal Cathar in a Mono-White Commander Deck
Once you do this, youll be able to draw 2 extra cards (hopefully Rare Candy) with its Happy Ribbon ability to try and turn your Cosmog into the Legendary Solgaleo ex
Sorry Queen Marchesa, but access to blue trumps black in nearly any formatperhaps that's why this does so well in Duel Commander