Exactly how 'likely' is it to learn a recipe from Northrend Inscription Research
I only just learned that I need to keep using Northrend Inscription Research to obtain better glyph recipes. And have been doing it daily for the past few days. However, the wiki (https://wowpedia.fandom.com/wiki/Nor...ption_Research), and the description in game both say that it's 'likely' to grant a new recipe.
But exactly how likely is it? Because I must have used the spell about 6-8 times and never have I got a new glyph recipe. I always get scrolls or vellums.
Am I just incredibly unlucky?, or is there something I'm missing about getting glyphs.
Just to confirm, I'm wanting the big boy glyphs: Glyph of Conflagrate and Glyph of Living Bomb; that kind of thing. The glyphs that people actually need.