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Alex Roebuck
What are replacement effects?
 A subset of continuous effects.
 Effects that modify another effect or action, or causes ...
Identifying replacement effects
 Instead
 Skip
 “[This permanent] enters
the battlefield with/as...”
 “As [this perman...
What gets replaced?
 A replacement effect’s text will (usually) indicate what
events it affects.
 If the indicated event...
What gets replaced?
What gets replaced?
What gets replaced?
Non-static replacement effects
 Not all replacement effects are static abilities of
permanents.
 Replacement effects can...
Non-static replacement effects
Multiple replacement effects
 The affected player / the controller of the affected
object decides which replacement effec...
Multiple replacement effects
 Once a replacement effect has been chosen, we apply it to
produce a modified event.
 If an...
Multiple replacement effects
Multiple replacement effects
Multiple replacement effects
Multiple replacement effects
Multiple replacement effects
Self-replacement Effects
 Some effects modify
themselves. This means that
both the event that’s going to
be modified and ...
Self-replacement Effects
 Why not just start with “Do Y?”
 Self-replacement allows spells
and abilities to function in a...
Self-replacement Effects
Self-replacement Effects
Self-replacement Effects
Self-replacement Effects
Entering the battlefield
 Some replacement effects modify how a permanent
enters the battlefield, e.g. tapped; face down....
Entering the battlefield
 To determine which effects apply and what they do...
 Use the same criteria as before to apply...
Entering the battlefield
 The results of the replacement effects are calculated
immediately before the object moves zones...
Entering the battlefield
Entering the battlefield
Entering the battlefield
Entering the battlefield
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Roebuck

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Roebuck

  1. 1. Alex Roebuck
  2. 2. What are replacement effects?  A subset of continuous effects.  Effects that modify another effect or action, or causes the effect/action to be skipped.  They can exist as a static ability on a permanent. They function for as long as that permanent is on the battlefield.  ...or they can be created by a one-shot effect, which means they have no visual representation and a pre-defined duration.
  3. 3. Identifying replacement effects  Instead  Skip  “[This permanent] enters the battlefield with/as...”  “As [this permanent] enters the battlefield...”
  4. 4. What gets replaced?  A replacement effect’s text will (usually) indicate what events it affects.  If the indicated event would happen, the replacement effect is applied at the exact time that event should happen.  Many events occur as part of a larger string of actions, such as following the instructions of a spell as you resolve it. Replacement effects only modify the indicated event and not other things that should happen in the same batch of actions.
  5. 5. What gets replaced?
  6. 6. What gets replaced?
  7. 7. What gets replaced?
  8. 8. Non-static replacement effects  Not all replacement effects are static abilities of permanents.  Replacement effects can be created by a spell or ability resolving.  They might have a pre-defined duration.  They might last indefinitely, or until they are “used up.”
  9. 9. Non-static replacement effects
  10. 10. Multiple replacement effects  The affected player / the controller of the affected object decides which replacement effect to apply, with the following restrictions:  Self-replacement effects must be applied before any other replacement effects.  If a replacement effect would modify under whose control an object would enter the battlefield, it must be applied next.  If a replacement effect would cause an object to become a copy of another object as it enters the battlefield, it must be applied next  Any remaining effect may be chosen.
  11. 11. Multiple replacement effects  Once a replacement effect has been chosen, we apply it to produce a modified event.  If any replacement effects could apply to the modified event, the player chooses one of them using the same criteria as before.  This can include replacement effects which weren’t applicable to the original event, but which are applicable to the modified event.  A replacement effect can only apply to each event once – no replacement effect which has already applied during the event’s “modification history” can apply a second time.  The process is repeated until no more replacement effects could apply.
  12. 12. Multiple replacement effects
  13. 13. Multiple replacement effects
  14. 14. Multiple replacement effects
  15. 15. Multiple replacement effects
  16. 16. Multiple replacement effects
  17. 17. Self-replacement Effects  Some effects modify themselves. This means that both the event that’s going to be modified and the replacement effect that modifies it come from the same source.  “Do X. Instead of X, do Y.”
  18. 18. Self-replacement Effects  Why not just start with “Do Y?”  Self-replacement allows spells and abilities to function in a variable or modified way in certain circumstances.
  19. 19. Self-replacement Effects
  20. 20. Self-replacement Effects
  21. 21. Self-replacement Effects
  22. 22. Self-replacement Effects
  23. 23. Entering the battlefield  Some replacement effects modify how a permanent enters the battlefield, e.g. tapped; face down.  These replacement effects can come from the object’s own abilities...  ...or from other continuous effects.
  24. 24. Entering the battlefield  To determine which effects apply and what they do...  Use the same criteria as before to apply the effects in the correct order.  Check the characteristics of the permanent as it would exist on the battlefield.  For each effect, take into account any replacement effects which have already been applied.  If the object is a spell, consider any continuous effects that have changed its characteristics (e.g. Moonlace).  Factor in the object’s own static abilities as they would apply to it on the battlefield, but ignore continuous effects from other sources.
  25. 25. Entering the battlefield  The results of the replacement effects are calculated immediately before the object moves zones, and applied as it moves.
  26. 26. Entering the battlefield
  27. 27. Entering the battlefield
  28. 28. Entering the battlefield
  29. 29. Entering the battlefield

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