I know it's a Warlord|Artificer Hybrid, but when I try to look it up, I just get broken links. What does it do and how do I build one?
Killswitch from the old WotC boards via the Wayback Machine
The basic idea of the build given is that thread is:
-- Create Instant Advantage, and decide the outcome of the encounter on T1. This becomes possible in very early Paragon, with the arrival of the 'Combat Commander' and 'Enhanced Resistive Formula' feats, and the 'Spell Commander' Paragon Path.
-- Be truly 'optimal' from Level 1 through Level 30.
It does this by having many abilities that help a party by doing things like granting free movement and attacks, and giving bonuses to the attack and damage rolls of allies while also being a decent healer.