Card Rules: Rulings powered by The Netrep API. 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. You cannot activate this card during the Damage Step. This card affects monsters, Spell Cards, and Trap Cards controlled by both players. 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. [Re: 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. [Re: Light and Darkness Dragon] During the turn 'Reverse Trap' is activated, 'Light and Darkness Dragon's' second effect will only activate 1 time after 'Reverse Trap' resolves. When it does, it will gain 500 ATK and DEF instead of losing 500 ATK and DEF. 'Light and Darkness Dragon's' second effect will activate normally during following turns, and if it gained 500 ATK and DEF the gained ATK and DEF becomes a loss of 500 ATK and DEF. [Re: Light and Darkness Dragon] Example:Player A activates 'Reverse Trap' in his Main Phase 1. Afterwards, he Tribute Summons 'Light and Darkness Dragon'. Player B activates 'Bottomless Trap Hole'. 'Light and Darkness Dragon's' effect activates, negating 'Bottomless Trap Hole' and gaining 500 ATK and DEF. [Re: 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. [Re: Mirror Wall] 'Reverse Trap' will have no effect on 'Mirror Wall'. [Re: The Agent of Force - Mars] Vs. 'Reverse Trap', 'The Agent of Force - Mars'' ATK & DEF become zero but cannot go below zero.