Last Updated: 2026-03-30

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383.3. When a Condition is met, a Triggered Ability behaves like an Activated Ability and is placed on the Chain.

383.3.a. If a Triggered Ability says "you may" as the first part of its Effect, the controller of its source will choose whether or not to place the Triggered Ability on the chain when its trigger Condition is fulfilled.
383.3.b. If a Triggered Ability contains a cost within instructions, that cost is treated as the base cost of the Triggered Ability.
383.3.b.1. The cost must be paid in order to finalize the Triggered Ability to the Chain.
383.3.b.2. Costs within instructions for Triggered Abilities are not paid on resolution, unlike costs within instructions for Spells.
383.3.c. Triggered Abilities can be put on the Chain during Closed States or Open States on any player's turn.
383.3.d. If more than one Triggered Ability is Triggered simultaneously, then the player that controls the Abilities selects the order to place them on the Chain.
383.3.d.1. If multiple players separately control Triggered Abilities that are Triggered simultaneously, then starting with the Turn Player and proceeding in Turn Order, each player orders their Triggered Abilities on the Chain.
383.3.e. If a triggered ability has a conditional statement following the Condition, that conditional statement must be true in order for the trigger to be placed on the Chain. Example: Sona, Harmonious reads "At the end of your turn, if I'm at a battlefield, ready up to 4 friendly runes." Her Trigger Ability's Condition will be fulfilled in the Ending Step, but the Triggered Ability will only be placed on the chain if she is located at a battlefield when the Condition is fulfilled.
383.3.f. Some Triggered Abilities will trigger "once each turn."
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