SWEDISHPOWER IS CORRECT!!!!!
Inspecting the parchment closer and 'reading between the lines' the keen eye would see there is a hidden text there. With some correction of Brightness and Contrast he would get this:
Play this flute at 14 h and he will come.
Sedishpower played the flute at 14 h and he was surprised when Unicorn came to him!
Now, Sewdispower you have 2 choices:
1) Touched by the beauty of that creature I have broken the flute and let Unicorn flee, to live forever in ToriWorld as a pure magical creature
2) You have killed the Unicorn knowing you can use his magic to craft an item!
CHOSE WISELY!