In this guide, you will find out how to solve the Merlin trials for the strange rocks with green markings and arrows in Hogwarts Legacy.
You can find it just North of Hogsmeade, so make your way there and use your wizard sense Revelio. You’ll find that the rocks start to glow.
Now you need to use your fire spell Confringo to destroy these rocks because melee attacks don’t work here. Just blow them all of them to complete the trial.
