Undaunted Bastion is a heavy armor set. When you taunt an enemy while you are under 60% Health, gain a damage shield that absorbs 13760 damage for 6 seconds. This effect can occur once every 10 seconds.
The Undaunted Bastion set is part of the base game. It drops in Elden Hollow I and Elden Hollow II in Grahtwood. Each set item is bound on pickup. You can acquire heavy armor, weapons and jewelry of this set in the Mercenary motif style.