Cards And Zones
What Happens When an Effect Says "Instead"?
Change the event before it happens, then carry out the replacement rather than the original event.
RiftPal explanation · Answer first
The short answer
An effect saying "instead" changes what is about to happen. Apply it before that event happens. Do the Replacement EffectAn effect that changes an event before it happens, often using "would," "as" or "instead."View in Glossary , not both outcomes. It does not create a separate chance to react in the middle.
RiftPal explanation
How it works
Follow the replacement's conditions exactly. If more than one applies to the same event, the affected card's controller chooses their order. If a player is affected, that player chooses; for an uncontrolled battlefield, the turn player chooses. Each replacement can apply only once to that event and the events replacing it.
A replaced event did not happen, so it cannot trigger an ability looking for that event. This does not automatically cancel later instructions: an instruction that specifically requires the original action, such as "if you do," is different from one that simply refers to the affected card.
Prevention replaces damage with a smaller amount; SkipReplace the specified event or part of the turn with nothing, then continue play. Abilities triggered by that skipped occurrence do not trigger. You only skip when an effect instructs you to.View in Glossary replaces an event with nothing. Replacements affecting combat damage are accounted for during damage assignment.
In practice
Example
Card example
Tactical Retreat
An effect would kill your unit, but a Replacement EffectAn effect that changes an event before it happens, often using "would," "as" or "instead."View in Glossary tells you to heal, exhaust and RecallRecall means moving a permanent back to its controller's Base.View in Glossary it instead. Carry out those instructions. The unit did not die, so its DeathknellAn ability that triggers when its own permanent is killed and sent to the Trash. Replacing that death with something else prevents the Deathknell from happening.View in Glossary does not happen.
Spell
Tactical Retreat
[Reaction] (Play any time, even before spells and abilities resolve.) Choose a friendly unit. The next time it would die this turn, heal it, exhaust it, and recall it instead. (Send it to base. This isn't a move.)