While cards that force your opponent to lose the game by not being able to draw from their deck have waxed and waned in Pokemon history, Moltress Wildfire attack was a strong option on that front in the TCGs early days
Trust me, there will be times where you throw Herald down defensively and its immediately removed, doing nothing
Loot, Exuberant Explorer lets you play an extra land on your turn, helping to ramp you up to use their second ability
Your main strategy is to generate a lot of Ooze tokens with a lot of +1/+1 counters, so Doubling Season and cards with similar effects like Primal Vigor and Parallel Lives will make your deck that much more efficient by increasing the number of tokens, or counters, or even both
However, hed heard the rumors of the cards being super popular, too, and it just so happened that a friend who traveled to Singapore recently gifted him with 15 cards as a souvenir in the hopes that he could write an article about them
The Human Cleric Wizard doesn't enter prepared, but can become prepared repeatedly at the beginning of each end step (not just yours) if an opponent has more cards in hand than you