1. rathena/src/map/script.hpp Search: HAT_EF_MAX Replace: /* Custom Hateffects */ HAT_EF_arcane_aura_A, HAT_EF_arcane_aura_B, HAT_EF_gluttony_aura_A, HAT_EF_gluttony_aura_B, HAT_EF_MAX = 9999 2. rathena/src/map/script_constants.hpp Search: export_constant(HAT_EF_EFST_C_20TH_ANNIVERSARY_HAT); Replace: export_constant(HAT_EF_EFST_C_20TH_ANNIVERSARY_HAT); /* Custom Hateffects */ export_constant(HAT_EF_arcane_aura_A); export_constant(HAT_EF_arcane_aura_B);