Helmet - illuminates pillagers and undead nearby.

Chestplate - strengthens the wearer if they take damage.

Leggings - if the wearer is sneaking, their next jump is boosted.

Boots - speeds up the wearer if there are pillagers or undead nearby.

Helmet - the wearer's gaze illuminates, slows and weakens creatures, consuming user experience in return.

Chestplate - keeps vexes away from the wearer and gains experience when enchanting (the faster the wearer enchants items, the more enchantment rolls on the table will be free, and some will start generating experience), along with the normal enchantment also enchants any books in the mainhand and offhand.

Leggings - the wearer floats up into the air if sneaking

Boots - the wearer's fall from a height high enough to take damage becomes smooth.

Helmet - grants the wearer night vision in the dark.

Chestplate - brings primal terror to aggroed mobs freezing them in place for a while (mobs like wolves, bees, endermans and zombie piglins) + consuming raw meat makes the wearer stronger and hungrier.

Leggings - grants invisibility to the wearer in the dark.

Boots - gives the wearer speed in the dark.

Helmet - at the cost of experience, creates a treasure map from a blank map in the wearer's mainhand.

Chestplate - while the wearer remains hydrated, grants them a shield, renewing it every few seconds (it is enough to be in water or just drink any potion/water).

Leggings - extinguishes fire underfoot, turns the layer of lava the wearer steps on into obsidian/stone, and also soaks concrete

Boots - Standing on sand speeds up the wearer.

Helmet - grants the wearer the conduit power

Chestplate - boosts the wearer depending on the ocean they are in.

Leggings - gives the wearer a dolphin's grace.

Boots - the wearer is almost gravity-defying underwater.

Helmet - the sun nourishes the wearer, restoring hunger (provided there are no obstacles above the wearer).

Chestplate - grants the wearer immunity to hunger and poison effects, as well as the ability to eat falling sand to strengthen, haste, and satiate them.

Leggings - teleports the wearer to the highest point in the world by pouring sand on themselves.

Boots - Standing on sand or sandstone, the wearer gains a shield that refreshes every few seconds.

Helmet - Guides the wearer to nearby points of interest by creating a halo of colored spheres around them.

Chestplate - Replenishes the wearer's HP if he is wounded and has not taken damage for some time.

Leggings - Gains experience while traveling around the world.

Boots - Greatly speeds up the wearer as he walks on a dirt path.

Helmet - Tames nearby animals if they have not been loyal to anyone before.

Chestplate - Anyone who damages the wearer will be attacked by nearby mobs capable of aggro.

Leggings - The wearer can use the leash to saddle any "rideable" animal.

Boots - Gives the wearer's mount speed and regeneration.

Helmet - The wearer's gaze awakens the animal's instinct to breed.

Chestplate - The bearer does not waste bone meal as long as they have enough experience.

Leggings - By putting crop seeds in offhand, the wearer exchanges them for others randomly by experience.

Boots - If the wearer drops no more than 6 blocks, the wearer will not trample the farmland and will not take damage from falling on it.

Helmet - Enlightens the wearer, granting them knowledge of all recipes.

Chestplate - The wearer's tools destroy blocks much faster (stacks with the beacon effect resulting in insta-mining deepslate).

Leggings - When crouching, the wearer pulls the nearest items to themselves.

Boots - If the wearer holds a scaffold in their offhand, it is automatically placed underneath them (if there is enough space).

Helmet - Senses vibrations of entities and items, giving the wearer a positioned sound to indicate the direction and type of object ( item/living creature).

Chestplate - Standing still, the wearer gains resistance to all types of damage.

Leggings - The shield in the wearer's offhand allows them to wipe out ALL projectiles in a certain area around them.

Boots - While the wearer is running, their next strike will be stronger.

Helmet - While holding Echo Shards in the main hand, the wearer can create a sonic boom while sneaking, spending 1 level and dealing significant damage to the area in front of them like a warden (requires a cooldown, after which the wearer will hear a distinctive sound).

Chestplate - Consuming the echo shards in the second hand, the wearer is healed rapidly + standing on a sculk infestation makes the wearer stronger, also making them immune to weakness and poison + damaging a creature infects it with a sculk disease, if the creature dies from the disease, the sculk infestation will explode.

Leggings - Standing on sculk infestation the wearer is immune to slowing and has increased speed (effects are enhanced if the wearer is sneaking).

Boots - Draws experience to the wearer + while standing on sculk infestation, the wearer becomes satiated, cleansing hunger + turns amethyst shards in the wearer's offhand into echo shards in exchange for 1 level.

Helmet - Eating golden carrots gives the wearer an absorption effect.

Chestplate - Absorbs gold nuggets in the offhand, generating a shield of gold and granting resistance to fire and haste if the wearer has gold hearts BUT immersion in water will destroy gold hearts.

Leggings - The wearer does not waste fire charges as long as they have enough experience.

Boots - Standing on a Netherrak or a Nylium speeds up the wearer.

Helmet - Creatures near the wearer are subjected to an all-consuming withering when they take damage, this effect saturates the wearer and withers all afflicted as long as the wearer is nearby indefinitely.

Chestplate - Gives the wearer immunity to wither, as well as enhancing the wearer in proportion to the amount of HP they are missing.

Leggings - Damaging a creature, the wearer collects its blood in a bottle (if there is one in the offhand), this potion restores the wearer's HP and withers them.

Boots - Speeds up the wearer in proportion to the HP missing.

Helmet - Illuminates and slows down all invisible creatures around the wearer.

Chestplate - In darkness, the wearer is weak but fast, if the wearer is invisible, the wearer gains additional damage resistance + In light, the wearer is strong but slowed, if the wearer is invisible, the invisibility fades, creating a bright flash of light that burns the nearest creature.

Leggings - The wearer does not spend ender pearls as long as they have enough experience (also wearer heals on each throw).

Boots - An ender pearl thrown by the wearer while sneaking is unaffected by gravity and will teleport the wearer to itself if it doesn't hit an obstacle.

Helmet - The wearer does not waste chorus fruit as long as they have enough experience (also chorus fruit replenishes more saturation).

Chestplate - Eating chorus fruit grants the wearer a temporary shield + End crystals near the wearer are destabilized, healing them after a few seconds and disappearing without exploding (the crystals themselves are invulnerable during the countdown).

Leggings - If the wearer is sneaking, they become immobilized, weakened, blinded, but invulnerable.

Boots - Allows the wearer to avoid the void (for a while).