Quote Originally Posted by Alberel View Post
It has been a long time since this was mentioned by the devs and given the story now it would make no sense for us to do so. We know the primals cannot be controlled and instead corrupt everything around them to their will... in lore terms the players ever summoning a primal would make them no better than the tempered beast tribes. I'm of a mind to think this feature was scrapped.
We only have the Ascian method in lore we don't know that they aren't actively giving out something that has downsides they profit from. It is entirely possible there are "safer" ways to summon.