The amount of life you gain from extort is based on the total amount of life lost, not necessarily the number of opponents you have
The dungeon cards wont need to be drafted or included as part of either players deck, starting alongside each player's sideboard without taking up a sideboard slot
Dinner Bell allows a player to spend two ink to draw cards equal to the number of damage a chosen character has at the cost of banishing them
Lucky for you, Lorcana has been out long enough to have plenty of starter decks on offer, giving you a variety of decks, strategies and Ink combinations to choose from
Gix is a great example of black getting in on the action with a highly playable card that doesnt just push into blacks tendency to punish opponents resources
Assassins Trophy and Swords to Plowshares are versatile removal, Familiars Ruse and Swan Song are great counterspells, Heroic Intervention protects our board, and Demonic Tutor can dig for our win conditions