Talk:Thunderwyvern/@comment-162.201.198.241-20150220094947/@comment-25604735-20150220142053

As stated earlier, the more powerful BBI enemies have damage thresholds. Use a purified cursed BBI weapon level 2. If you're still having trouble use up to 4 X Conqueror's Periapt for added strength and 4 X Demon's Periapt for added magic.

If you're mounted on the back, the most effective skills are the dagger 100/1000 kisses or the Assassin's Dire Gouge with a sword. If you're just slashing away with a core skill, your attacks will be considerably less effective. Good BBI daggers to use are the level 2 Sapfires or Helmbartes or the level 3 Framaes. Good non-BBI daggers are the Heaven's Keys. Good BBI swords (to be used with Assassin's Dire Gouge) are the Cursed Bite and Cursed Light both level 2 and the level 3 Devilsbane. A good non-BBI sword is the Ascalon.

Weapons close to the ones above in power can also do the job especially on Normal or Easy difficulty. However, you may find that using Periapts as suggested above will help quite a bit.