Heal Counter is one of Sharla's EtherArts in Xenoblade Chronicles. It is an aura that reduces her total aggro by a certain percentage and prevents aggro gain from attacks or healing while it is active. It generates a barrier around one party member, giving that person a Damage Heal effect. Each time that person is hit by an enemy, the field will restore 5% of their max HP. The effect disipate either after a certain amount of time or after the barrier has taken a set amount of hits.
Advanced art books are only available from enemy drops.For any enemies listed with a 0% drop rate, the item can only be obtained using Yoink!, Riki's Talent art.