Frost

Frost from level 1 to 60, and the Forever Mage default before talent spells (Fireball until Frostbolt at level 4). Pulls with Frostbolt; then Ice Lance on Fingers of Frost or a frozen target (also while Frostbolt is still casting, to cancel or batch), Cone of Cold at five Winter's Chill stacks, Arcane Missiles on Missile Barrage, Frostbolt, and a wand when solo and you cannot afford Frostbolt. Moving: Ice Lance, else Fire Blast. Three or more enemies fighting you: Cone of Cold; five or more: Blizzard, or Arcane Explosion with a mob on you. Warcraft Tavern's Flamestrike and Arcane Explosion AoE is included but off. Reminders: Arcane Intellect, armor (Ice or Frost solo, Mage Armor in a group, never replacing one you chose), Ice Barrier, Counterspell, Remove Lesser Curse, Frost Nova when a mob reaches you, Cold Snap. Health and mana are hidden from addons on Forever, so finishing low targets with Fire Blast, Evocation and Ice Block are your call; Blink, kiting, Polymorph and mana gems stay with you too.

Adapted from Icy Veins: Forever Frost Mage PvE, Icy Veins: Forever Frost Mage leveling, Warcraft Tavern: Forever Frost Mage, Wowhead: Forever level 30 Frost Mage, Blizzard Mage and Shaman deep dive (as published by Warcraft Tavern), SimulationCraft Forever spell data (1.60.1.70425).

In game: /rm set frost chooses it by hand; it loads only for its edition and class, and is listed only for the specializations it is for.