The Japanese name of this archetype could derive from "flamberge". It is interpreted as "Fire Bell" in the French version, and "Flame Prison" in the Chinese version (or perhaps more properly, "Flame Hell", from the word for "hell" that literally means "earthly prison").
A Deck using the "Flamvell" archetype will essentially be using FIRE monsters, most of which have 200 or less DEF, and their trump card, "Rekindling", can get you up to 5 monsters at once. This could lead to various Synchro Summons, or if you have a "Flamvell Archer" handy you can tribute it, "Flamvell Baby", or "Flamvell Poun" in order to add 800 Attack to each one giving you a total of 3200 extra attack points.
Accel Synchro Summon Flamvell
This deck uses the "Flamvell" cards to quickly summon Red Nova Dragon and/or Shooting Star Dragon.
This Deck's strategy is to mix "Flamvells" with Zombie monsters, since some of the most beneficial Zombie monsters in the game share 200 DEF, the same as a majority of "Flamvell" monsters. "Flamvell Poun" makes an excellent search card because of that, netting the player either an "Immortal Ruler", a "Spirit Reaper", or a "Plaguespreader Zombie".