Nail said:
I'll bet you can only hold one wand at a time. ...but I've run out of time today to chase down text in the SRD and splatbooks. Anyone?
The same principle can be applied to a crafted item, though.
Gauntlet of command-activated Magic Missile, CL1: 1800. (1 missile)
Gauntlet of command-activated Magic Missile, CL3: 5400. (2 missiles)
Gauntlet of command-activated Magic Missile, CL5: 9000. (3 missiles)
Gauntlet of command-activated Magic Missile, CL7: 12600. (4 missiles)
Gauntlet of command-activated Magic Missile, CL9: 16200. (5 missiles)
Gauntlet of command-activated Magic Missile, CL1, with the additional property (at 1.5x cost) of command-activated Magic Missile, CL1: 4500.
Gauntlet of command-activated Magic Missile, CL1, with two additional properties (at 1.5x cost) of command-activated Magic Missile, CL1: 7200.
Gauntlet of command-activated Magic Missile, CL1, with three additional properties (at 1.5x cost) of command-activated Magic Missile, CL1: 9900.
Gauntlet of command-activated Magic Missile, CL1, with four additional properties (at 1.5x cost) of command-activated Magic Missile, CL1: 12600.
Gauntlet of command-activated Magic Missile, CL1, with five additional properties (at 1.5x cost) of command-activated Magic Missile, CL1: 15300.
If you use the FAQ ruling that a single item can activate multiple properties with one standard action if all of them have the same command word, then it's cheaper to have a six-missile gauntlet than the CL9 5-missile gauntlet.
Disadvantage: the SR penetration is worse.
Advantage: Since each missile is a separate spell, each has its own chance to beat SR individually.
Advantage: The 15' limit on multiple targets doesn't apply, since each missile is a separate spell.
Advantage: Not capped at 5 missiles...
-Hyp.