Pursuer is about 30.7 million power and level 79. I just gained around 7 million power (I went from around 14 million to 21 million) and I keep getting 15% or maybe even less, and it's kind of frustrating because I have used a lot of formations for this guy. Any formations I could use?

I have Queen Penth, Lancelot, Shayd, Destroyer Herja, and my main hero.