Update: Ancient Shieldbearer has been revealed on the official Hearthstone website. This is another card that benefits off C'Thun having at least 10 Attack.

Judgehype has revealed a new Druid Card named Klaxxi Amber-Weaver that benefits from a buffed C'Thun! This card has the base stats of a Chillwind Yeti with a Battlecry that will only benefit the Druid if C'Thun has enough attack!