There are two types of Game Actions: — Riftbound Rules

Section 410 — 9 rules

410.1.: Discretionary Actions
410.1.a.: A Discretionary Action is a Game Action that may be performed at any time during a player's turn during a Neutral Open State. See rule 307. States of the Turn for more information.
410.1.b.: A player may take any number of Discretionary Actions available to them during their turn.
410.1.b.1.: As long as any conditions, if applicable, are met.
410.1.b.2.: As long as any costs, if applicable, are paid.
410.1.b.3.: As long as it does not result in any forbidden action being taken or game state being created. Example: A player can't use the Standard Move discretionary action to move a unit to a Battlefield that's already occupied by Units controlled by two other players.
410.2.: Limited Actions
410.2.a.: A Limited Action is a game action that a spell, ability, or circumstance of the turn's progression causes the player to perform. A player cannot perform these actions at-will.
410.2.b.: These actions can only be taken when a player is instructed to do so as the execution of an effect or during their specified occasion during the turn. Example: A player may Draw during the Draw Step of the Beginning Phase of their turn or when instructed to do so by a spell or ability. They can't choose to Draw at any other time.