This will comfortably fit 99 cards plus some tokens and the commander displayed in the top loader
Similarly, when we need action off the top, a fetchland will help us sculpt our draw by getting our one copy of Hedge Maze
Similarly, Lightning Bolt and Swords to Plowshares represent the peak of efficiency for their effects, remaining staples for decades because no other cards do their job better for the cost
The tournament wasnt large, but it was full of stock decks from what I saw: Mono-Red, Green Black, Green White, a couple Teferi, a Mono-Blue player, etc
The only thing that you can't allow is getting tucked (Oblation), since Blue has very few creature tutors available to get him back
Yorion, Sky Nomad The companion mechanic certainly was an interesting design choice