Never heard of 30x, jesus that would kill ya. Salvia is NOT a recreational drug. Anyone who has smoked Salvia more than once will attest to this. It's not something that you just decide to do like smoking a bowl. After a couple rounds with Salvia, I have no desire to partake for a long time, sometimes a year or more. Although I do have some 10x sitting in front of me that I'm thinking about smoking in a minute for shits & grins, but it is late...gah, choices.
But I digress, first timers should definately have a sitter, who knows what could happen.