The heartstrings of Dragons produce wands of sheer power, they are among the most powerful of magical cores. Dragon wands tend to learn quicker than other types; they are well suited to Transfiguration and to all manner of martial magic. While they can change their allegiance if won from the original master, they always bond strongly with the current owner. The Dragon wand tends to be easiest to turn to the Dark Arts, though it will not incline that way of its own accord. This is not a subtle core, as Dragon heartstring tends to be prone to accidents, being somewhat temperamental.