theory11 — Magic Tricks & the World's Finest Playing Cards

What is this lighter effect?

Okay as good as the twilight lighter trick is, it isn't what is being used in this routine. Jim Pace sells this device, and I reccomend anything made by Pace. The gimmick is called the "Flicker" and can be found here.
 
Why yes it is, for the Pace gimmick I believe it uses butane, the kikuchi uses possibly a liquid fuel such as lighter fluid. I'd go with the butane because it is easier to control and less of a hazard of lighting your entire hand on fire :).