Similarly, players often like to buff up their hexproof creatures with instants and enchantments, which dont have hexproof
In general, if your opponents have threatening battlefields, it's better to leave Vehicles uncrewed to ensure you can use them as blockers.
(Note: the Handbook states that any remaining damage should be placed on the Raid Boss Pokmon, but makes the math too complex, and we ignore this rule.) When the Raid Boss Deck runs out of cards, the Discard is shuffled, and used as the Raid Boss Deck
The key is buying cards people actually want to own (modern alt arts, vintage Base Set holos, sealed ETBs from popular sets), not chasing whatever pumped last week
There are no shortage of ways to abuse this ability, so get to work