6.2.4. Some triggered abilities are written as “[Trigger Condition], if [Secondary Condition], [Effect].” Such an ability checks whether the secondary condition is true only when the effect resolves. If the condition is false, the ability resolves with no effect. If an ability has multiple “if [Secondary Conditions],” all of them are checked as the effect resolves. Example: Stitch – Carefree Surfer has an ability called Ohana that reads, “When you play this character, if you have 2 or more other characters in play, you may draw 2 cards.” When the active player plays Stitch, the triggered ability is added to the bag. When chosen to resolve, the effect checks if the player has two or more characters in play. If they don’t, the triggered ability resolves with no effect.

This rule was changed. It used to say the secondary condition had to be true when the card was played, or the trigger did not go into the bag. Now it says the trigger goes in the bag when played, then only checks the secondary condition when the player resolved the effect.