The power to manipulate the efficacy of anything. Sub-power of Causality Manipulation.

Also Called

  • Effect Manipulation
  • Efficiency Manipulation


User can decrease or increase the efficacy of anything they wish. This ability allows the user to increase or decrease the efficiency and potency of anything and control the probability or improbability of something happening.


  • User can decrease opponents attacks or defenses making them harmless, ineffective and vulnerable to attack.
  • Increase the destructive power of users own attacks or defense.
  • Increase allies abilities and decrease enemies abilities.



  • Some users only use this ability when they are in a personal domain or in a certain territory.
  • User only controls the potency of abilities, cannot limit or negate them.

Known Users

  • Hades (CDZ)
  • Milo (Saint Seya)
  • Shishio (Hitokiri Batosai)
  • Mizuro (Combo)
  • Wanda Maximoff (X-Men: Evolution)
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