From a set of 32 cards, 20 different cards are selected for each game, and two players battle using those cards.
The 20 cards at the start of the game and the order of the cards are random, but after that, there is no drawing, etc., and the use of the cards can limit the opponent's actions on his/her next turn.
There is no element of luck other than the order of the cards at the beginning of the game, and the game is a severe game in which victory or defeat is determined solely by playing.
There is a concept of cost, but there is no need to save mana to pay the cost, and accidents do not occur.
(You will know what I mean when you try it!)
It is possible to mix and match cards from the planned second and subsequent expansions.
—description from the designer