I like to include good cards against the deck because it gives opprotunity to think about what you mean when you say the set is broken or whatnot, when in reality it is slow starting, must-have setup deck, vulnerable to popular sidedeck cards, fairly weak monsters, and runs off a field spell
Each 2017 Mega-Tin is sold separately
As Zowayix said, it's a toss-up between Sword and Knowledge, but to help on the early stages, I'd say go with Sword
In essence, Bonney trades 1 life (you take it, possibly triggering any Life effects) to set up a specific card as your next life draw
Back to Base Form: In his last duel against Ai, Yusaku uses Firewall Dragon Darkfluid, the monster that defeated Bohman, and Accesscode Talker and while the latter was able to tie against Ai's The Arrival Cyberse @Ignister
Having a card psa graded and rated in this system adds value, and is almost an expected etiquette when selling particularly old cards (like a charizard, a mewtwo, a blastoise or the legendarily rare pikachu illustrator card for example) that are high in value