If the top card of your library changes while you're casting a spell, playing a land, activating an ability, or taking a special action, you can't look at the new top card until you finish doing so

(Bevy of Beebles) Basri Ket Basri, Devoted Paladin Calix, Destiny's Hand Chandra Ablaze Chandra Nalaar Chandra, Acolyte of Flame Chandra, Awakened Inferno Chandra, Bold Pyromancer Chandra, Dressed to Kill Chandra, Fire Artisan Chandra, Flame's Catalyst Chandra, Flame's Fury Chandra, Flamecaller Chandra, Flameshaper Chandra, Heart of Fire Chandra, Hope's Beacon Chandra, Legacy of Fire Chandra, Novice Pyromancer Chandra, Pyrogenius Chandra, Pyromaster Chandra, Roaring Flame Chandra, Spark Hunter Chandra, Torch of Defiance Chandra, the Firebrand Comet, Stellar Pup Commodore Guff Dack Fayden Dakkon, Shadow Slayer Daretti, Ingenious Iconoclast Daretti, Scrap Savant Davriel, Rogue Shadowmage Dihada, Binder of Wills Domri Rade Domri, Anarch of Bolas Domri, Chaos Bringer Domri, City Smasher Dovin Baan Dovin, Architect of Law Dovin, Grand Arbiter Dovin, Hand of Control Ellywick Tumblestrum

All in all, many of the cards in the Final Fantasy Crystal cycle look like great inclusions to specific Commander strategies
I usually focus on the middle-to-final stages of design after receiving a vision design handoff
MTG Deck Size As you can see, the question of how many cards go into an MTG deck cant be answered with a single number