Instructions
Freeze the attacking trees near Tulgey Mill with McTwisp's Time Control ability, then continue forward.
Go to Tulgey Mill and walk up to the Mad Hatter. He will tell you that you must find the Vorpal Sword.
Stand on the Mad Hatter's podium and use the cursor to select the yellow objects.
Line up the yellow objects to reveal the March Hare's house. This will cause a vortex to appear, out which will come the Knave of Hearts, otherwise known as Stayne. At this moment, the Mad Hatter will hand you the Pishsalver potion, which allows you to shrink and hide.