Regardless, people have been getting their stuff way early, and people are getting excited about the insane Bonus Cards of the set
Each booster pack contains 10 cards and 1 basic Energy
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Mysteries of the Deep: Whether you had a land enter the battlefield under your control this turn is checked as this spell resolves, not as you cast it
Its ability to cycle through decks more quickly made it easier for players to execute their strategies and win battles
Then theres Retriever Phoenix, a weird outlier which bridges well into the next topic of discussion
Remember, class enchantments stack, so you can play multiple copies and trigger their abilities simultaneously, but each card needs to be leveled up separately