A Damned Creature?

Asher raised a brow when he felt the earth under his feet shake subtly out of nowhere. But what surprised him was when he saw his HP drop and a message popping up in his vision. He grimaced in excruciating pain as he almost fell to his knees. It was too sudden and painful, and he didn't see it coming. But the pain went away after a couple of moments as he straightened his back with a confused look.

[ Blood sacrifice accepted ]

[ HP : 144 -> 72 / 144 ]

"What is this??" Asher was startled and couldn't understand what was going on. Who wouldn't feel tensed when their HP suddenly halves for no reason? His mana wasn't even fully depleted, and there was no reason for the ring to even forcibly take some of his life force. 

But the next second, he was distracted by what was going on in front of him.