How Do You Start The Merlin Trials Hogwarts Legacy Quest?

I get a real thrill hunting the hidden challenges in 'Hogwarts Legacy', and the 'Merlin Trials' are some of the best little rabbit holes the game hides. These trials often sit off the beaten path and won’t always show up on the map until you’re practically on top of them — they appear as faint sigils or glowing circles on the ground and can be tucked behind rubble, under ledges, or inside ruined shrines. The usual suspects for finding them are: the castle grounds (including courtyards and lower dungeons), cliffside caves and ravines, ruins and temples scattered across the overworld, waterfalls and the bases of cliffs, and secluded pockets of the Forbidden Forest. A lot of times I find one behind a destructible wall or under a pile of debris that needs Bombarda or a similar force spell to clear. Use Revelio whenever you’re near suspicious terrain: it reveals hidden mechanisms, sealed altars, and the telltale shimmer that marks a trial. Don’t forget to check underwater nooks and the undersides of bridges — some trials are deliberately submerged or tucked away to reward exploration. Rewards are usually worth the detour: XP, gear upgrades, sometimes unique cosmetic trinkets or components for unlocking deeper secrets. My favorite trick is to sweep a single region with Revelio, mark each spot mentally (or with the in-game map pin), and then come back armed with the needed spells to complete everything in one go. It turns a random stroll into a satisfying scavenger run, and I always come away feeling like I uncovered a little piece of hidden lore — totally worth the time.