When are turn-based actions performed in a game?

Turn-based actions are performed whenever a step or phase begins that incorporates such actions. This is established in the Comprehensive Rules, which outlines how certain actions, such as drawing a card at the beginning of a turn, are not limited to specific phases like the main phase. Instead, they happen at specific points in the turn structure, namely during the upkeep, draw, and during each main phase, among others.

This means that the timing of turn-based actions is crucial—they are inherently linked to the structure of the turn and occur automatically as the game progresses through its phases and steps, rather than being confined to a single phase or left to the discretion of the active player.