Heavy attack focused keep pumping them out and activate abilities when they expire. That's it, pretty lazy.
Lightning Flood last 10 seconds and does AOE lightning damage where aimed.
Critical Surge last 33 seconds and heals you for every critical attack.
Boundless Storm last 30 seconds, provides resistance, and does AOE lightning damage to enemies near you. - Give 4 seconds of Major Expedition.
Skeletal Arcanist a skeleton that last 20 seconds and does AOE lightning damage.
Ultimate – Changes your heavy attacks into lightning bolts that do AOE lightning damage.
Aedric Spear is mainly here for the passives.
Luminous Shards 10 seconds of AOE that also drops a synergy for the group to restore energy pools. – Doesn’t need to stay up but the occasional synergy would be nice for you and group members.
You can mix the gear up but keep it 2 Medium pieces and 5 Light pieces. Chest and Legs for medium gives a little more armor.
Bare Minimum CP in recommended order of acquisition
Fitness
Sprinter - 10
Hasty - 16
Celerity - 50
Warfare
Precision - 20
Piercing - 20
Thaumaturge - 50
Beyond that follow the recommended under the CP section.
Alternative foods
Witchmother's Potent Brew
Mistral Banana-Bunny Hash
Melon-Baked Parmesan Pork
Solitude Salmon-Millet Soup
Ghastly Eye Bowl