One of the most persistent frustrations in the wizarding world of Hogwarts Legacy is the surprisingly limited gear inventory. You start with a handful of slots that fill up rapidly as you explore dungeons and loot chests. The only structural solution to this inventory bottleneck is the completion of Merlin Trials. These environmental puzzles are scattered across the Scottish Highlands, offering a direct path to expanding your carrying capacity while testing your mastery of various spells.

Completing these trials is more than a completionist's goal; it is a tactical necessity. As you progress into the mid-to-late game, the sheer volume of high-tier gear you encounter will force you to either constantly visit Hogsmeade to sell items or, worse, destroy valuable gear in the field. By understanding the mechanics of these 95 puzzles, you can effectively double your inventory space.

Unlocking the Trials and the Mallowsweet Economy

You cannot interact with Merlin Trials immediately upon starting your journey. The ability is locked behind a specific main story quest titled "Trials of Merlin." This quest triggers shortly after you meet Natty Onai near Lower Hogsfield. You will assist a researcher named Nora Treadwell, who introduces the lore behind these puzzles—they were designed by Merlin himself during his time as a Slytherin at Hogwarts.

The "key" to every trial is the Mallowsweet leaf. Without this herb, the stone altars remain inert. While you can find Mallowsweet in the wild, this is an inefficient strategy for completing all 95 trials. The most sustainable approach is to purchase Mallowsweet seeds from The Magic Neep in Hogsmeade. Once you have access to the Room of Requirement, you should prioritize setting up potting tables. Mallowsweet can be grown in any pot size and matures quickly, ensuring you always have a stack of leaves before heading out on an exploration spree.

The Nine Types of Merlin Trial Puzzles

Every Merlin Trial falls into one of nine distinct categories. Recognizing the visual cues of a trial before you even land your broom will save you significant time. Each type requires a specific spell or set of spells to complete.

1. The Brazier Lighting Challenge

Required Spells: Incendio or Confringo

This trial involves three braziers mounted on stone pillars of varying heights. Once you light the first one, it begins to sink into the ground. If it reaches the base before the others are lit, the trial resets. The logic here is simple: start with the tallest pillar, as it has the longest distance to travel, and end with the shortest. Confringo is generally preferred over Incendio because of its superior range, allowing you to hit all three from a central position without sprinting between them.

2. The Symbol Cube Flip

Required Spell: Flipendo

Perhaps the most mentally taxing for some, this puzzle consists of three stone pillars with cubes on top. Each cube and pillar base features different symbols. You must use Flipendo to rotate the top cube until the symbols match the base. The trick is to pay attention to the direction you are hitting the cube from. Hitting the side rotates it horizontally, while hitting the front or back flips it vertically. Focus on matching one side first, then adjust your position to flip it into the correct final orientation.

3. The Large Stone Sphere (Golfing)

Required Spells: Depulso, Wingardium Leviosa, or Accio

You will see a large, circular indentation in the ground (the "hole") and a massive stone sphere nearby. Your objective is to move the sphere into the hole. Often, the sphere is located uphill. While you can use Depulso to blast it forward, the most precise method is using Wingardium Leviosa (which triggers automatically if you use Accio after unlocking it). This allows you to levitate the ball and walk it directly to the goal, bypassing tricky terrain or obstacles.

4. Small Stone Ball Clusters

Required Spells: Accio or Wingardium Leviosa

Upon activating the trial, look for platforms with four circular holes. Somewhere in the immediate vicinity, there will be piles of five small stone balls. You need to pull these balls to the platforms. Using Accio is usually sufficient to guide them into the slots. There are typically three such platforms per trial. If you have trouble finding the balls, casting Revelio will highlight them in blue, even through walls or thick foliage.

5. Moth to a Flame (Moonstone Pillars)

Required Spell: Lumos

These trials are identified by stone pillars with a hollow, crystalline center. You must find groups of glowing moths nearby and lead them to the pillars using Lumos. It functions identically to the moth-frame puzzles found inside Hogwarts. There are usually three pillars per trial. If the moths aren't immediately visible, check behind breakable rocks or up nearby cliffs.

6. Pillar Parkour (Standing Stones)

Required Spells: None

This is a physical challenge rather than a magical one. A series of stone pillars will rise from the ground. You must jump from the first to the last without touching the earth. If you fall, the stones reset. You can make this easier by using a broom to scout the path first, but the actual completion requires your character's feet to land on each platform. Note that you cannot use a broom to "cheat" the contact points.

7. Destroying the Orbs

Required Spells: Basic Cast or Confringo

This is the simplest trial type. Several stone pillars with small orbs on top will be scattered around the area. You simply need to destroy all of them. While a Basic Cast works, Confringo is faster for orbs positioned at a distance. Use Revelio to ensure you haven't missed an orb hidden behind a tree or tucked into a rock crevice.

8. Cracked Stone Pillars

Required Spell: Confringo

You will see several large, rectangular stone blocks with green-tinted cracks. These cannot be destroyed by Basic Casts. You must use a high-impact spell like Confringo or Bombarda to shatter them. Usually, there are five of these pillars to find. They are often spread further apart than other trial elements, so stay within the trial's music zone to ensure you're looking in the right place.

9. Repairing the Statues

Required Spell: Reparo

When you activate this trial, three nearby statues will immediately crumble into pieces. Your task is to find the rubble and cast Reparo on each. They are often located in a semi-circle around the altar. This is a quick trial, but the pieces can sometimes be hidden in tall grass, making Revelio essential.

Strategic Distribution Across the Highlands

While there are 95 trials in total, you don't need to complete all of them to maximize your inventory. The rewards are tiered. To optimize your time, it helps to know where the trials are most concentrated.

  • South Hogwarts Region: This is where you will likely start. The trials here are generally simpler and serve as a good introduction to the mechanics.
  • Feldcroft Region: This area has a high density of trials (around 16). It is an excellent place to go on a "farming run" to unlock several inventory upgrades at once.
  • Hogwarts Valley: Another dense region with 16 trials. Combining a Feldcroft run with a Hogwarts Valley run can net you nearly 30 trials in a single session.
  • North Ford Bog & Forbidden Forest: These areas have fewer trials (around 4-5 each) and are often more spread out, making them less efficient for inventory rushing.

The Gear Slot Reward Tiers

Expansion of your gear slots occurs through the "Exploration" tab in your Challenges menu. You must manually claim these rewards; the inventory space does not increase automatically upon finishing the trial. The milestones are as follows:

  1. Complete 2 Trials: +4 Gear Slots
  2. Complete 6 More (8 Total): +4 Gear Slots
  3. Complete 10 More (18 Total): +4 Gear Slots
  4. Complete 14 More (32 Total): +4 Gear Slots
  5. Complete 20 More (52 Total): +4 Gear Slots

By the time you complete 52 trials, you will have unlocked the maximum additional 20 slots, bringing your total capacity to 40. The remaining 43 trials in the game do not provide further inventory space, though they are required for the "Merlin's Beard!" achievement/trophy and contribute to your overall level XP.

Pro-Tips for Efficient Solving

To make your Merlin Trial hunt as smooth as possible, consider these veteran strategies. First, always fly on your broom at a medium altitude. The Merlin Trial icons (represented by a small leaf) appear on your mini-map when you are nearby. If you fly too high, they might not trigger, but flying too low limits your field of vision.

Second, use Revelio while on your broom. This will highlight the interactive elements of a trial (like the orbs, moths, or balls) in blue from a significant distance. This is particularly helpful for the "Destroying Orbs" or "Small Ball Clusters" trials where elements might be obscured by terrain.

Third, prioritize your spell loadout. If you are dedicated to solving trials, keep a dedicated spell diamond with Confringo, Flipendo, Accio/Wingardium Leviosa, and Lumos. This covers almost every trial type, preventing you from having to constantly swap spells in the menu.

Finally, be aware of the "Tallest to Shortest" rule for braziers. It is the most common reason players fail that specific trial. If you're struggling with the timing, check if there's a brazier you missed that is even higher up the hill. Often, developers hide the tallest one slightly further away to trick your perspective.

The Role of Merlin Trials in the End-Game

Once you reach the level cap and have your desired gear set, the trials transition from a survival necessity to a world-building element. They encourage you to visit corners of the map you might otherwise ignore, such as the Cragcroftshire coast or the Clagmar Coast. Many of these trials are placed near Ancient Magic hotspots or Treasure Vaults, allowing you to stack your activities and progress multiple challenges simultaneously.

While solving 95 puzzles might seem daunting, the mechanical variety ensures the process rarely feels like a chore. Whether you are using Depulso to "golf" a boulder across a canyon or using Flipendo to solve a logic puzzle, the Merlin Trials remain a core pillar of the Hogwarts Legacy experience, rewarding curiosity with the most precious resource of all: more space for your wizarding loot.