Consider a pyromancer that uses weapons and defense/armor made entirely of fire. I realize that one issue with this concept is the compressibility and thinness of plasmas. An object may easily pass through a flame. while said object is burned, it is not stopped.
Is it possible to make an effective barrier against physical weapons using fire? If so, is there a temperature, thickness, or type of fire/plasma that would be able to do any or all of the following when used as a "shield":
- Stop or deflect metal objects
- Incinerate wooden arrows before completely passing through
- Melt alloy and light metals in a "reasonable" amount of time - several seconds
I appreciate greatly any answer that also touches on the localized air pressure differences generated by high-heat flames, and also the magnetic effects of controlled, compressible plasmas (specifically with regards to ferric metals)
Bear in mind, the pyromancer in question will be immune to the effects of the heat, and thus his/her well-being is not an issue. Similarly, there are counter-measures for side-effects of great heat such as blinding brightness. Assume the construct will be held in shape during the interactions with other objects.