Would you be able to provide an example of an ideal character candidate and how that character would be challenged by the described foe?

With it being intentionally and overly fantastic, if one was to create a character with certain powers that have precise, tried and true outcomes, I'm just curious how those effects differ when it comes to the Endgame foes.

If I make a character with the power of pyromancy with fires that can break down an assortment of varied matter as well the ability to engulf legions of foes in an almost instant fiery death, coupled with a mystical sword that can cut through anything as well as project various forms of energy in addition to applying mystical physical attributes to its user which this character used to conquer his entire world, are these powers then nullified once this character enters Endgame?  How do you envision sizing up these characteristics both from PvP and PvNPC?  Are the Space/Time Lords able to muzzle abilities like these and do players have a say when determining which powers get muzzled and which play through as described in the CS?