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TCG Rulings

Mentions in Other Rulings

  • Black-Winged Dragon: If Reverse Trap is activated, the ATK of Black-Winged Dragon will increase for each Black Feather Counter on it and an opponent’s monster targeted by the effect will have its ATK increased. No damage will be inflicted in that case.

OCG Rulings

  • "Reverse Trap" is not an effect which increases or decreases the ATK or DEF; it is an effect which affects effects which increase or decrease ATKs or DEFs. Thus, you cannot activate "Reverse Trap" during the Damage Step.[1]
  • If the effect of "Reverse Trap" is being applied, the effect of "Metalmorph" that increases 300 ATK and DEF, reduces 300 ATK and DEF instead. Also, the effect that increases ATK by half the ATK of the opponent's monster during damage calculation, reduces ATK by half the ATK of the opponent's monster instead.[3]

Previously Official Rulings

  • If a card gives a monster +100 ATK, and "Reverse Trap" is activated, that monster now has -100 ATK instead. This card only affects increases and decreases of a defined value, such as +200 (which becomes -200) or -500 (which becomes +500). It does not change cards which "double", "half", or "reduce to 0" the ATK or DEF of a monster.
  • Additional "Reverse Traps" activated in the same turn will have no effect. So "Reverse Trap" will change "Axe of Despair"’s effect of adding 1000 ATK to subtracting 1000 ATK. If a second "Reverse Trap" is activated, the equipped monster still has -1000 ATK.

Mentions in Other Rulings

  • Armored Cybern: If "Reverse Trap" is activated, the equipped monster will gain 1000 ATK instead of losing 1000 ATK. When the turn ends, the ATK gain will become an ATK loss.
  • Karate Man: "Reverse Trap's" effect is not applied because "doubled and halved" are not considered as increasing or decreasing.

Out of Date

  • Metalmorph: If "Reverse Trap" is activated, the increase of 300 ATK and DEF is changed into a decrease of 300 ATK and DEF. When your monster that is equipped with "Metalmorph" attacks your opponent's monster, the additional gained ATK, that is based on the ATK of the monster being attacked, is NOT changed to a decrease.[Notes 1]


Notes

  1. The latest prints of "Metalmorph" and "Reverse Trap" have Problem-Solving Card Text that do not explicitly allow this interaction.

References

  1. Konami OCG Card Database: Can you activate "Reverse Trap" in the Damage Step?
  2. Konami OCG Card Database: If "Flash Assailant" is equipped with "Megamorph", and "Reverse Trap" is activated, what is the ATK of "Flash Assailant"?
  3. Konami OCG Card Database: If the effect of "Reverse Trap" is being applied, how does the effect of "Metalmorph" that increases ATK by half the ATK of the opponent's monster resolve?
  4. Konami OCG Card Database: If the effect of "Reverse Trap" is being applied, if "Light and Darkness Dragon" effect that negates the activation is applied, will the ATK increase?
  5. Konami Judge Program Forum: Individual Email Rulings VS Individual Card Rulings
  6. UDE FAQ: Individual Card Rulings [A-C]
  7. UDE FAQ: Individual Card Rulings [D-E]
  8. UDE FAQ: Individual Card Rulings [F-H]
  9. UDE FAQ: Individual Card Rulings [I-K]
  10. UDE FAQ: Individual Card Rulings [L-O]
  11. UDE FAQ: Individual Card Rulings [P-R]
  12. UDE FAQ: Individual Card Rulings [S-T]
  13. UDE FAQ: Individual Card Rulings [U-Z]
  14. UDE FAQ: SPECIFIC CARDS RULINGS

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