This is a 100 cards 2-4 players battlebox set in the Forgotten Realms !
The emphasis is put on :
As much iconic D&D references as possible
Dungeon exploration and fun mechanics
Only AFR cards
Before the game starts, put aside all of the class cards, starting equipment cards and fighter's equipment cards.
Each player starts with 10 basic lands (2 Forest, 2 Island, 2 Mountain, 2 Plains, 2 Swamp) in his/her command zone. Each player can play 1 land from his/her command zone each turn.
Each player draws from the same library (the 100 cards from the battlebox).
Each player has his/her own graveyard.
Each player starts the game with a 4-cards hand.
Each player starts the game with one of the 12 class cards and one of the 4 starting equipment cards in their command zone. Each of those cards can be cast once from the command zone during the game.
The content of the D&D Movie Secret Lair can be added to the cube, although Doric's ramping ability doesn't work with the battlebox (because ramping is really powerful, you can just ignore the ability).