Okay so I saw some videos and am confused. I'l put it in points: 1) You have to beat 10 espers to fight Zodiark. 2) To fight Omega you have to have all espers. 3) To get the wyrmhero blade you have to beat Yiazmat and Omega and do the fishing game. 4)I saw a video showing Penelo using the wyrmhero blade on Zodiark. 5) huh?