Legendary Creature Dinosaur Mutant Rare Miro Petrov 6/6 NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Timeless NOT LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer NOT LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl NOT LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern NOT LEGAL Predh As Indominus Rex, Alpha enters, discard any number of creature cards
Balance of Card Types: A good beginner deck has a mix of characters (probably the majority of your deck), some actions for surprises or removal (cards that banish or bounce enemy characters), maybe a couple items if they suit your strategy, and a few songs if your characters can make use of them
FULL-ART LANDS AND DOUBLE-FACED CARDS IN EVERY PACK
You'll be more likely to have that creature removal when someone swings for lethal with some huge creature
Twenty-one total Lessons is all I could find that was even a little bit playable, and of those, several wouldn't be if you had to put them in the main deck
Conspiracy cards, which are only legal in the Conspiracy draft format