Cairax’s tongue, he controls blood ties too

The demon twitched a finger and the red cords holding St. George pulled tighter. Not much. Just another half inch. He felt it in his joints.
He managed to glare back at the creature. “Next you’ll tell me your only weakness is wood,” he said. “Before you know it you’ll give your whole plan away.”
“Such bravado,” said Cairax. Its tongue darted out and snapped like a whip in front of St. George’s face.

Excerpt From Ex-Communication, pg 511
Peter Clines
https://books.apple.com/us/book/ex-communication/id635706546