Core element from magical creature

Is it safe to assume that the staff contains a core element from a magical crature? I believe it was said by Ollivander that wizards and witches could channel their power through any instruments that contained some magical substance, but due to small size and flexibility of small woods, wands turned out to be the best tool, as it was easier to perform the quick movements needed to make a spell powerful. Am I correct in this memory? Lukas Exemplar (talk) 15:42, November 17, 2016 (UTC)