Numbering 95 across the game, Merlin's Trials are prominent in Hogwarts Legacy. They increase the number of equipment slots. All of them require sweet mallow to be activated, as well as certain spells to defeat them. Merlin's trials at Pointe du Manoir are no exception to this rule, requiring different spells.
List and Location of Trials of Merlin from Pointe du Manoir
Sweet Mallow can be obtained from the Magic Turnip vendor in Hogsmeade. The latter also sells seeds to grow yourself. Merlin's Trials are visible on the map as you pass by, making them easy to spot even in Manor Point.
Spell needed: Break
Once the event is activated, light the 3 braziers within a given time. The taller pillar will take longer to extinguish.
Spell needed: flipping
Once the event is activated, flip the cubes on 3 pillars using Flipendo to match their symbols to those below.
Spell needed: Repulsed
Once the test is activated, use Repulso to push the rock towards its receptacle. The rock is near the shore and must go up the slope.
Spell needed: Lumos
Once the test is activated, bring the 3 clouds of butterflies back to their receptacle. The first is to the south, on the bridge. The second, still to the south, is under the bridge. Finally, the last is to the east, below, behind a Devil's Net.
Spell needed: Break
Once the ordeal is activated, destroy the illuminated pillars using Confringo. You must destroy 5 in total to complete the test.