Upgrade Fury Charm through three ranks and it tops out at Resentment Lv3. The first rank costs 3,000z to craft, every rank after that is an upgrade. Some of the materials only come from Ajarakan, Nerscylla, Nu Udra and two more monsters.
Rank by rank
Fury Charm IRarity 5
Resentment Lv1: Attack +5 while active.
Craftable · 3,000zFury Charm IIRarity 7
Resentment Lv2: Attack +10 while active.
Upgrade from previous rank · 9,000zFury Charm IIIRarity 8
Resentment Lv3: Attack +15 while active.
Upgrade from previous rank · 16,000z