You need:
<span class='standouttext'>Spoiler : </span><span class='spoiler'>the wisdom rune => rune room, 2nd last rune
the Feynur potion => from mage Markunthar, either by fight or luring him away
the Kohar root => from Nixfix, by trading against a mushroom in the East part of the Tunnels, lvl 1
a spider leg => specimen room</span>
Have you got all? Please, highlight to read.
Now talk to the instructor - he will take the rune, tell you to place the rest within the circle and read the book.
