Art Treasures are permanent buffs unlocked in the Art Hall by completing collection sets in the Exhibition Hall and General Hall; each of the 16 named treasures (Excalibur, Mona Lisa, Great Imperial Crown, Discobolus, Terracotta Army, Tutankhamun's Mask, Ring of Fafnir, Champion Knight Armor, Nike of Samothrace, Celtic Chariot, Golden Eagle Flag, Trojan Horse, Laurel Wreath, Yasakani no Magatama, Iron Crown, Gold Cup of Eternal Stability) can be leveled Lv1-8 for a stronger buff. Example: Excalibur gives Attacking Ground/Ranged/Mounted Troop Attack +5% (Lv1) scaling to +85% (Lv8); Gold Cup of Eternal Stability gives, when attacking, enemy Ranged Troop Defense -10%->-185%, when defending enemy Ground Troop Attack -10%->-185%, plus own Ground Troop Attack +5%->+55%, all scaling Lv1->Lv8. Leveling up a treasure requires a treasure-specific 'Art Treasure Scroll' plus 4 types of 'Artwork Fragment' (also treasure-specific, e.g. Knight's Sword/Leg Armor/Armor/Helmet for Excalibur); material costs per level jump rise from 40-80 units (Lv1->2) to 1,300-4,180 units (Lv7->8). Activation of each treasure requires unlocking specific Exhibition Hall categories (e.g. Excalibur needs Knight Equipment Hall, Stringed Instrument Hall, Jewelry Hall) or General Hall tiers (e.g. Gold Cup of Eternal Stability needs Era of Glory, Tactical Grandmaster, Eternal Renown general-collection tiers).
Original research source: Evony Guide Wiki
