Gandalf the White

wotc · 2023-06-16

If you somehow control two copies of Gandalf the White, a legendary permanent or an artifact entering or leaving the battlefield causes abilities to trigger three times, not four. A third Gandalf the White causes abilities to trigger four times, a fourth causes abilities to trigger five times, and so on.

wotc · 2023-06-16

If a legendary permanent or an artifact entering or leaving the battlefield at the same time as Gandalf the White (including Gandalf the White itself) causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

wotc · 2023-06-16

The trigger event doesn't have to specifically refer to legendary permanents or to artifacts, nor does it have to specifically refer to when something "leaves the battlefield." For example, an ability that triggers "whenever a creature dies" would trigger twice if a legendary creature or an artifact creature dies while Gandalf the White is on the battlefield, as would an ability that triggers "whenever a permanent is put into a graveyard from the battlefield."

wotc · 2023-06-16

Look at each legendary permanent and each artifact as it exists on the battlefield, taking into account continuous effects, to determine whether any triggered abilities will trigger multiple times. For example, if a nonlegendary creature that has become legendary (probably because it's a player's Ring-bearer) dies, an ability that triggers when it leaves the battlefield triggers twice.