In card game speak, the Ban List pertains to a list of cards that are either banned or can only be included in a limited manner to all decks
A 3/1 with vigilance is nothing to sneeze at, but tack on a mini-Land Tax-esque ability, and youre looking at a truly wonderful dog
A fairly funny play is to name a planeswalker, so if they want to activate the loyalty abilities of the planeswalker, they need to pay an additional two mana
Here's how you claimed the Karlov Manor 'thewayisopen' code: First, you had to create a deck that includes these cards: 1 Extract a Confession 1 Homicide Investigator 1 Leering Onlooker 1 Glint Weaver 1 Granite Witness 1 Meddling Youths 1 Furtive Courier 1 Case of the Stashed Skeleton 1 Out Cold 1 The Pride of Hull Clade 1 Reckless Detective 1 Novice Inspector You didn't have to actually own the cards or craft them for the hack to work
As such, it lends itself very well to deck upgrades, but even if you forgo upgrading it, Limit Break is still a great deck to play with out of the box without any alterations
For example if you attack your opponent's Blue-Eyes White Dragon with Buster Blader and they activate Mirror Force you activate this card to save Buster Blader, but your other monsters are toast