Level 1: Conjure Bolts, Resist Energy, light repair and light admixture.
Level 2: Moderate Repair, Elemental Weapons, Lightning Sphere (last one more on casters)
Level 3: Turret, Adamantine, Repair, Blast Rod
Level 4: Greater Elemental Weapons, Armor of Speed, Repair Critical
Level 5: Cure Critical, Planar Weapons, Prismatic Strike
Level 6: Reconstruct, Tact Det, Deadly Weapons, Chain Lightning, Arcane Tempest