Counts vary by set and product line, so confirm the exact configuration before you buy
Yes, you can run it with 3 weapons just fine, you'll hit a weapon a vast majority of the time and you're not building your deck fretting over 5% ~ 10% chances
Mask of Memory, Dark Bargain, Daretti, Scrap Savant, and Neheb, Dreadhorde Champion continue the draw/discard combo, with the latter two providing some nice recursion and some mana to spend while burning through cards
People bluff less often than you'd expect and people block less often than you'd expect
This level of quality control ensures that you are getting cards in the best possible condition, which is essential for both collectors and players
Other Deck Customization Features In addition to sleeves, playmats, and coins, deck accessories in Pokemon TCG Pocket also include deck boxes, highlight cards, and Energy