Do you think the Binder variant of the build would stack up well against a straight Binder?
Probably better, provided you're not using the online vestiges. I'm not sure about how an online-vestige binder would work with the wand overdrive trick.
On second thought, though, you can't do it with just PSC - Wand Mastery itself requires caster level 9, as well as Craft Wand (which requires CL 5). So you'd need to ender with a caster class of some sort, and the only wand-friendly caster class I know of that won't suck royally with just 5 levels + Practiced Spellcaster is Warlock (since people expect different things from them).
Warlock 6 would probably be better for the extra invocation. Would the extra 3 levels be used for Legacy Champion?
I must insist that you post details aswell, especially because I was planning to run it against my party I'm dming and I feel its an attractive choice, thanks to tempest, rt, andarious and all other contributers I have run one build they did against my part (heavy crusader) and have used these builds if I need a powerful character on the fly. I have also had great success with eat sleep gank causing massive havoc for the pcs.
These are NOT all my creations! The lead authors are identified as follows: [TS] Tempest Stormwind, [AR] Andarious Rosethorn, [RT] Radical Taoist, [SN] Sionnis, [DH] DisposableHero_, [SH] Seishi.
[TS] The Pinball Brothers: Large And In Charge (Melee, Lockdown, Charge, Juggling) [TS] Ashardalon Reborn: I Will Swallow Your Soul (Melee, Fear, Negative Levels, AoE, Theme) [AR] "A"-Game Paladin: Play That Funky Music, Knight Boy! (Team Support, Melee, Theme, Single-Class) [RT] Uncanny Trapsmith: Get in, make it look like an accident, get out. (Skillmonkey, Stealth/Scout/Infiltration, Unorthodox Methods, Theme) [AR] Wizsassin: *Everything* is permitted. (Spellcaster, Support, Sneak Attack, Utility) [TS] Phantom Rush: General Gish Gouda. (Gish, Theme, Setting-Specific(Eberron), Early-Entry PrC) [TS] Storm Knight: Another kind of gish. (Melee/"Gish", Theme, Setting-Specific(Eberron), Unorthodox Methods) [TS] Inevitable Nightmare: The weapon you only have to fire once. (Melee, "Unorthodox" Methods (no charging), Reliability) [AR] Captain Constitution: The number one threat to America. (Melee, TOUGHTOUGHTOUGH, Defense, Theme) [AR] Nuker: I casts the spells that makes the peoples fall down! (Spellcaster, damage, blasting, damage) [TS] Dread Lord of the Dead: Let the Reaping Begin! (NPC-only, Variable (combat/casting/leadership), Iconic Villain, Theme) [AR] Heavy Crusader: No Rest. No Mercy. No Matter What. (Melee, Damage (No charging), Variable, Theme). [TS] Gun Fu: It's bullet time (Ranged, THEORETICAL, Twin weapons, Theme) [RT] Face First: We should talk. (Psionic, social, mind-control, info-management) [SN] Chaingun Porcupine: Never Enuff Dakka. (Ranged, Skirmishing, Spike Damage, Incarnum) [RT] Always On Edge: The Mortal Draw deals death. (Melee, Generalist, Dungeoneering, Stunt) [AR] Feral Druid: Real feral taste. Zero druid calories. (Melee, offense, damage, murder) [RT] Rusty!: Man's Best Friend (Sentry, Support, Backup, Rearguard) [RT] The T3 (Tashalatora Triple Threat): My Kung Fu is More Powerful (Hybrid, Flex-Function, Melee, Caster) [RT] The #1 Snoipah: Boom. 'Eadshot. (Caster, Theme, Spike, Trapscout) [AR] Dreamblade: Rest in Pieces. (Melee, Damage, Single-Class, Combo/Momentum) [AR] Evasion Tank: “When fighting angry blind men, is best to stay out of the way.” (Melee, Tank, Unorthodox Methods (attack negation), Theme) [DH] Psycarnum Warrior: ↑↑↓↓←→←→BA Start (Melee, Tank, Psionics, Incarnum, 1337 h4x) [AR] Heavy Weapons Elf: WHO TOUCHED MY BOW? (Ranged, Cohort, Damage, Unorthodox Methods (ranged ToB)) [RT] Gnowhere Gnome: A little man who wasn't there (Caster, Stealth, Single-Class, Elusive) [AR] Uberflank: I got your back. (Melee, support, stunt, teamwork) [TS] Flip the Bird: Everyday I'm shuffling (Ranged, harrier, unorthodox methods (ranged ToB / off-turn movement), support) [DH] Eat Sleep Gank: Real Ultimate Power (Stealth, Assassination, Spike, Magic Versatility) [AR] Slash and Burn: Mind, Body, Blade, Flame / Aspects of a greater whole / which delivers death. (Melee, Theme (flex-style), Damage, Stunt) [RT] Edge of the Light: Cut, Fade to Black (Melee, Defense/Offense, Momentum, Tactical) [RT] Quiet Murder: Cut throats, not corners. (Melee, Stealth, Harrier, Tactical) [TS] Wand Overdrive: Say Hello to my little friends. (Caster, support/artillery/variable, wand specialist) [RT] God Hand: What did the five fingers say to the face? (Melee/Gish, Unarmed, SAD, Theme) [AR] Zero Buff Time Gish: Try to keep up! (Gish, Speed, Movement, Opportunity) [TS] Robo Tackle: I Am Iron Man. (Melee, setting-specific (Eberron), positioning, theme, stunt)