If you mean my character is affected by one of them, I prefer poison. Petrify is just too bad, especially in some parts of the game. Anyway, Chaos is the worst. I remember when I was playing in the Calm Lands in FFX, and I had Auron at his maximum. And that stupid Malboro kept on casting Chaos on him, and Auron kept on slaughtering the other members of the party. That sucked
Battle of exasperated reactions:
Slap in the face vs Insult