This powerful mage uses the best equipment available to destroy his enemies easily.
Magic Staff of Wisdom+5
Dark Sunset Staff+5(or a Dark Nashandra's chime+5)
Rings: Dark Clutch ring, Fire Clutch ring, Lightning Clutch ring, Magic Clutch ring
For Sorcery:Crystal Soul Spear
For Pyromancy:Great Chaos Fireball
For Dark: Great Resonant Soul, Climax, or Dark Hail, Dark Sword.
For Miracles:Sunlight Spear
Those are the required ones that hit the hardest. The rest is up to you.
Wear armor that increases casting speed. You have one other free slot;this setup is light so you can go all out. Time your casts well, as they will do immense damage.