What are the key phases of a turn in Magic: The Gathering and how do they impact gameplay?

In Magic: The Gathering, a turn consists of three main phases: the beginning phase, the main phase, and the ending phase. These phases impact gameplay by allowing players to strategically play cards, cast spells, and make decisions on when to attack or defend. Each phase offers opportunities for players to plan their moves and react to their opponent's actions, ultimately influencing the outcome of the game.