Quote Originally Posted by PArcher View Post
Because its not a few drops of random dragon blood that transforms Thordan's Children; its a ritually-prepared concoction using the blood of Nidhogg's brood.

Draconian Potions won't transform anyone even though dragon blood is an ingredient because its not prepared in the specific way to induce it. Its also why Estinien didn't transform after bathing in Nidhogg's blood (with that much blood on him, he had to ingest some of it accidentally)
You say that a special concoction is required, but as I understood it, wasn't it more that the Ishgardians required the consumption of a large amount of dragon blood in order to become dragons? Also, perhaps the potions just don't have any effect at all on non-Ishgardians? As for Estinien, hasn't he always been *this* close to transforming anyway?