At 11th level, a 20 INT wizard's high level slots are 1x6, 2x5, and 3x4. A duelist Fighter, with a +1 sword, against 17 AC, such as a Behir, is expected to do as much damage each round as the wizard casting Blight against an enemy with +4 to save, such as that same Behir. A Samurai's Action...