GOT: Molten Crown

When I first transmigrated, I thought my most cunning enemy was Varys. I eliminated Varys. After that, I believed my deadliest foe was Illyrio. I eliminated Illyrio. Then I crushed the Dothraki, thinking the path was finally clear. But with the Dothraki gone, the Free Cities became my greatest threat. Ah— Only now do I truly understand: My most dangerous and insidious enemy is neither Robert nor the White Walkers. He stands high above me. He is the one all men worship—the gods themselves! — Description from novelcodex.org