How to play against Sinistar.

I played as Inga, although he chose Erin instead of Sinistar. In the final battle, I had an advantage in terms of army size; I had 13 dragons against his 7, although the difference in other units was smaller. A dragon could reach the enemy in one turn thanks to the rune and destroy the entire stack with a single attack. The Jarl used his ability to eliminate all of his witches. Of course, his hero also dealt significant damage with magic, but sometimes the deflection ability would trigger. Ideally, he should have retreated, but he was confident that he would defeat me. Also, we didn't like the "smile" template in large size, and we wanted to finish the game as soon as possible.