Summon Copy is one of Melia's EtherArts in Xenoblade Chronicles. It is a support art that summons a copy of the most recently summoned element, even if that element has already been discharged with Elemental Discharge.
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.