Replacement Effects
Interactions · intermediate
A replacement effect changes what would happen, replacing the original event with a new one. Think of it as "instead of..." -- the original event never actually happens.
Examples
- Doubling Season: "If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead." Token creation is replaced.
- Leyline of the Void: "If a card would be put into an opponent's graveyard from anywhere, exile it instead." Graveyard placement is replaced with exile.
- The commander rule: "If your commander would be put into a graveyard, exile, hand, or library from anywhere, you may put it into the command zone instead." This is a replacement effect, which is why it doesn't use the stack.
Replacement effects don't use the stack
You can't respond to a replacement effect. The original event simply never happens. This is huge for understanding why you can't "kill the commander before it goes to the command zone" -- the choice is part of the replacement, not a separate triggered ability.
Multiple replacement effects
If multiple replacement effects could apply to the same event, the affected player (or controller of the affected object) chooses the order. Apply them one at a time until none are left.
Example: A player has Leyline of the Void and Rest in Peace in play. A creature would die. Both replacement effects could apply ("would be put into a graveyard"). The player whose creature it is chooses an order. Either way, the creature ends up exiled, but knowing both could apply matters for sequencing other triggers.
Replacement vs triggered
| Question | Replacement | Triggered |
|---|---|---|
| Uses the stack? | No | Yes |
| Can be responded to? | No | Yes |
| Wording | "Instead", "if X would Y" | "When X", "whenever X", "at" |
| Counters effects? | Yes (it changes the event) | Doesn't change the event, just adds another |
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