305. Main Phase

305.1. There are two main phases in a turn. In each turn, the first main phase, known as the precombat main phase, and the second main phase, known as the postcombat main phase, are separated by the combat phase (see rule 306, “Combat Phase”). The precombat and postcombat main phases are individually and collectively known as the main phase.

305.2. The main phase has no steps, so a main phase ends when all players pass in succession while the stack is empty. (See rule 300.2.)

305.3. As the main phase begins, any abilities that trigger at the beginning of that main phase go on the stack. (See rule 410, “Handling Triggered Abilities.”) Then the active player gets priority and players may play spells and abilities. (This is the only phase in which a player can normally play artifact, creature, enchantment, and sorcery spells, and only the active player may play these spells.)

305.4. During either main phase, the active player may play one land card from his or her hand if the stack is empty, if the player has priority, and if he or she hasn’t yet taken this special action this turn. (See rule 212.6, “Lands.”) This action doesn’t use the stack and it isn’t a spell or ability of any kind. It can’t be countered, and players can’t respond to it with instants or activated abilities.