Ever wonder what the magic number is to get less resistance against High Notorious Monsters when casting spells with Black Mage(Blm). The most effective set up is having 120 Intelligence and 320 Elemental Magic Skill. My equipment set up for my Taru Black Mage is: High Quality Elemental Staves(weapon), Bugard leather Strap +1(sub weapon), Phantom Tanthlum(ranged), Moldavite Earring(earring), Abyssal Earring(earring), Elemental Torque(neck), Sorcerer's Petasos(head), Igqira Weskit(body), Wizard's Gloves(hand), Tamas Ring(ring), Snow Ring(ring), Prism Cape(back), Penitent's Rope(waist), Jet Seraweels(legs), Rostrum Pumps(feet). This set up has given me great success against being resisted with my spells on HNMs. There are alot more equipment that can be used to help get you to that magic number against High Notorious Monsters. Below is the equipment recommended to use against HNMs.

Weapon
High Quality Elemental Staves ie Jupiter Staff (Highly Recommended) - +15% Magic Accuracy and Magic Attack Bonus
Elemental Staves ie Thunder Staff - +10% Magic Accuracy and Magic Attack Bonus
Alkalurops - +10 Intelligence +20 Magic Accuracy

Sub Weapons
Bugard Leather Strap +1 - +1 Intelligence
Thunder Grip (Highly Recommended) - +2 Thunder Magic Accuracy
Ice Grip (Highly Recommended) - +2 Ice Magic Accuracy

Hands
Wizard's Gloves - +15 Elemental Skill
Wizard's Gloves +1 (Highly Recommended) - +15 Elemental Skill and +3 Intelligence

Head
Sorcerer's Petasos (Highly Recommended) - +10 Elemental Skill
Morrigan's Coronal (Highly REcommended) - +4 Intelligence +5 magic Accuracy
Wizard's Petasos - +4 Intelligence
Demon Helm - +5 Intelligence
Demon Helm +1 - +6 Intelligence

Neck
Elemental Torque (Highly Recommended) - +7 Elemental Skill

Body
Igquira Wisket - +5 Elemental Skill
Genie Weskit (Highly Recommended) - +6 Elemental Skill
Morrigan's Robe - +8 Intelligence

Legs
Druid's Slops - +5 Elemental Skill
Jet Seraweels - +7 Intelligence
Errant Slops - +7 Intelligence
Mahatma Slops (Recommended) - +8 Intelligence
Morrigan's slops (Highly Recommended) - +10 Intelligence

Feet
Rostrum Pumps (Recommended) - + 3 Intelligence
Morrigan's Pigaches (Recommended) - +3 Intelligence
Goliard Clogs (Highly Recommended) - +4 Intelligence +2 Magic Accuracy
Nashira Crackows (Recommended) - +5 Elemental Skill +2 Magic Accuracy

Back
Rainbow Cape - +3 Intelligence
Prism Cape (Recommended)- +4 Intelligence
Merciful Cape (Recommended) - +5 Elemental Skill

Waist
Sorcerer's belt (Highly Recommended) - +6 Intelligence
Penitent's Sash (Recommended) - +5 Intelligence

Rings
Tamas Ring (Highly Recommended) - +5 Intelligence
Snow Ring - +5 Intelligence
Balrahn's Ring - +4 Magic Accuracy Your Ad Here