Extension Charm is a talisman you take through three ranks, ending at Item Prolonger Lv3. The first rank costs 500z to craft, every rank after that is an upgrade. Some of the materials only come from Chatacabra, Doshaguma, Gypceros and three more monsters.
Rank by rank
Extension Charm IRarity 3
Item Prolonger Lv1: Item effect duration +10%
Craftable · 500zExtension Charm IIRarity 4
Item Prolonger Lv2: Item effect duration +25%
Upgrade from previous rank · 1,500zExtension Charm IIIRarity 5
Item Prolonger Lv3: Item effect duration +50%
Upgrade from previous rank · 3,000z