Why I'm league starting Archmage Hierophant (ball lightning)

Character Level 100 Hierophant Bandit: Kill all
Pools 4,790 Life 3,666 Energy Shield 10,148 Mana
Defences 10,690 Evasion 120,213 effective HP
Resistances 76% Fire 76% Cold 76% Lightning 76% Chaos
Avoidance 20% Block 100% Spell Suppression
Weapon 1 Profane Wand
Weapon 2 Profane Wand
Helmet Evasion/Energy Shield Helmet Deicide Mask
Body Armour Sadist Garb
Gloves Evasion/Energy Shield Gloves Murder Mitts
Boots Evasion/Energy Shield Boots Murder Boots
Amulet Atziri's Foible Paua Amulet
Ring 1 Life Ring Vermillion Ring
Ring 2 Chaos Resistance Ring Amethyst Ring
Belt Stygian Vise
Jewel Cobalt Jewel
Ancestral Vision Viridian Jewel
Jewel Cobalt Jewel
The Light of Meaning Prismatic Jewel
Unnatural Instinct Viridian Jewel
Body Armour Ball Lightning of Orbiting 21/20 Archmage 20/20 Spell Echo 20/20 Lightning Penetration 20/20 Slower Projectiles 20/20 Inspiration 20/20
Weapon 1 Frost Shield 20/20 Sigil of Power 20/20 More Duration 20/20
Weapon 2 Eternal Blessing 20/20 Grace 20/20
Boots Arcane Cloak 20/20 Arcane Surge 20/20 More Duration 20/20 Automation 20/20
Gloves Frostblink of Wintry Blast 20/20 Archmage 20/20 Faster Casting 20/20 Inspiration 20/20
Helmet Punishment 20/20 Hex Bloom 20/20 Frostblink 20/20