Battle Card Brawlers - Rules for beginners

About Battle Card Brawlers, from BoardGameGeek:

Battle Card Brawlers is a duel game in a fantasy setting. Each player has a general on the board (a 5x9 grid) with 2 attack and 25 health and the goal is destroy the opponents general, while keeping your own general alive. Each player has a deck of 60 cards consisting of minions, spells and artifacts. There are starter decks, but with the huge amount of available cards a ton of different decks can be built. Minions are summoned onto the board and all friendly units can move and attack on every turn after they are summoned. Moving and positioning units to guard others and to play around effects and spells of your opponent makes it a very strategic game. With most of the action happening on the board, it is also highly interactive. At the start you have a mulligan phase with 3 cards. Each turn (including the first) two cards are drawn. Once per turn a card can be added to the mana pool to pay for mana costs of other cards - there exist no extra mana cards. -description from the designer