Bioga

Bioga is a spell that inflicts negative status on an enemy in the Final Fantasy series. It is the stronger form of Bio.

Final Fantasy Tactics
Bioga is casted by an enemy exclusive class called the Rune Knight. It is also casted by Cúchulainn.

Final Fantasy Crystal Chronicles: Ring of Fates
Bioga is casted by piling Fira +1, Blizzara +1, Cura +1, and Clearara +1. It inflicts poison on the enemy.