Binding 17 + 1 = 18 Lock down somebody who wasn't expecting it.
Fear 13
Fireballs 3 - 2 = 1 See reason below
Lightning Bolts 22
Magic Missiles 24
Paralysis 23
Polymorph 23
Web 19
Wonder 21
Back in 1e, there was an article describing Magic Missile Mk 1, Magic Missile Mk 2, … Magic Missile Mk 10. Each number was more powerful than the last. Magic Missile Mk 10 was an ICBM with MIRVs* aboard. Biggest fireball ever.
* Intercontinental Ballistic Missile with Multiple Independent Re-entry Vehicles, carrying atomic bombs. Do you remember Cold War nomenclature?