Delta Attack (ability)

Delta Attack is a powerful recurring attack which requires the presence of all three users.

Final Fantasy IV
The Magus Sisters are able to use Delta Attack, wherein Sandy casts Wall on Cindy; Cindy attacks a character, and Mindy then casts an offensive spell on Cindy, which will bounce off and hit the player party.

Final Fantasy V
Phobos, Nereid and Triton, three of Exdeath's lackeys, will use Delta Attack when one of them is defeated and it successfully revives itself before the player has a chance of killing one of the others. It inflicts low to mediocre damage to one character, but has a possibility of Petrifying that character. Omega also uses Delta Attack, which does more damage, but can be reflected. Finally, the Mover enemy located in the final dungeon can also inflict Delta Attack. If the player Catches it, Delta Attack will be inflicted upon the enemy's release.

Final Fantasy VI
The Three Dream Stooges, Laragorn, Curlax and Moebius, are able to use Delta Attack (previously known as Delta Hit). It has a possibility of Petrifying the character it hits.

Crisis Core -Final Fantasy VII-
An enemy called Movers use Delta Attack. It causes critical damage to Zack.

Final Fantasy IX
The enemy Movers in Terra will cast Delta attack when three are alive at the same time.

Final Fantasy X
Delta Attack is the Overdrive of the Magus Sisters, and is arguably the strongest Aeon Overdrive in the game, as well as having the longest animation sequence. It is a non-elemental attack which breaks the Max Damage Limit by default, however the attack is hindered by the defense of the enemy so inflicting Armor Break beforehand is important. In the International Version, it deals 8 attacks rather than just 1.

Final Fantasy X-2
Delta Attack is the Overdrive that the Dark Magus Sisters use, when you meet them in the Farplane.

Chrono Trigger
Delta Attack is used by the boss named Guardian along with his two Bits.