Trap in a trap

A knight emerged from the shadow. His aura of invasion wasn't merely polluting the ground, but assimilating and corrupting the environment itself. Even the falling rainwater that fell on him was infused with evil!

Be it knight or mount, a pair of crimson glints that could frighten the soul flickered in the darkness. All who looked into those eyes would have their souls sucked into the darkness.

Indeed, the most fearsome dark beings of the Lord of the Rings; eternally formless due to the rings they wielded, and traveling between the realms of reality and shadows.

The most terrifying slaves of Sauron. Darkness followed after them, and the hummings of death sung from their mouths. The Nazgûl, also known as Ringwraiths!