Divide by zero: Confuses all enemies and characters, ignores all status resistance.
Duel: Targets a single enemy. The current battle is interupted by a new battle sequence where the character using the command and the selected enemy fight each other 1 vs 1. Once either the character or the enemy dies, the original battle resume but with the dead monster/character still dead and the surviving monster/character at the HP/MP/status effects that he/she had when ending the "duel".
Swap Res: You may choose 1 enemy, and then 1 element. The character and the enemy switch resistance/weakness against the choosen element.