Remathilis
Legend
When Batman fights Joker, he wears his batsuit. When he fights Superman, he wears literal kryptonite plot armor. He becomes supernatural himself. Part of the problem of course is D&D offers no meta currency except magic items and XP, and both are available to caster and non caster alike.For characters of radically different power levels, this is done through the literary equivalents of GM fiat and metacurrency.