World of Warcraft - Item Upgrading
The upgrade of an item allows players to boost the gear score of an item to 700 and also add a final perk. Items can be upgraded if they're in your inventory and you decide to take them to the kiln.
Certain items can be upgraded for their unique stats (like a perfectly rolled breakpoint armour used in melee PvP) while others like weapons don't change much post upgrade, so they aren't worth upgrading.
Weapons

Upgrades to weapons can boost their numerical stats, including attack damage, crit chance and PvE/PvP damage. Weapons have a flat-rate bonus that increases damage per second. Many weapons also have a fixed bonus which is activated when three or more identical weapons are placed in a single unit. In some instances, this bonus could amount to more than the amount of damage that a weapon is able to upgrade by itself.
The cost of upgrading a weapon is contingent on its rarity as well as its current level. For instance an item with a rating of +2 will require two regular Smithing Stones to upgrade while an upgrade of +3 requires four. The number of stones required to upgrade a weapon will continue to increase until it is required to use the higher level of Smithing Stones, at which the amount will be reset to one.
Upgrading weapons will also reroll their base stats. This is generally a positive thing, but it can also have negative consequences. In the case of items that are only used in a certain build (Whistant's shield for FB Sorcs, for example), upgrading them may make them unusable unless you have an extremely lucky roll.
Armor items can be upgraded to boost their effectiveness. This can increase the defense base of a helm or chest, while belts and gloves can boost their strength and agility. Armor offers a rerolling option for its Enhanced Defense%. This means that it is able to roll down to a lower value.
The upgrade template for a weapon will display the new stats it will gain when upgraded in addition to their relative values. This means that a weapon will gain 33% attack damage when it is upgraded from an 8 attack damage sword to an 11 attack damage sword. The 3% does not mean that the weapon will be hit three times less, since it is an absolute number.
Rerolling a weapon can be possible by pressing the green button within the item menu, using the circling arrows. This will reroll the item and alter its stats, however, it will not reset the weapon's level nor connect to the status of your account.
Armor
A few armor upgrades can make all the difference to your survivability. official website provide massive boosts to poison or curse, fire, and magic resistance, which makes it easier to navigate through tough terrain. In general, the greater defense your character has, the more value you get out of each point of health, so it's important to upgrade your armor as much as possible.
You can upgrade your armor by visiting one of the Great Fairy Fountains. There are four Great Fairy Fountains available in the game and in order to unlock each fountain, you must complete an additional quest that involves the Stable Trotters. Once you've done the main side quest and completed the corresponding fountain and then you can contact any Great Fairy to open up the armor upgrade menu.
The amount of material needed to upgrade each piece of armor will vary. You'll need anywhere from three Red Chuchu jellies and 10 Rupees to upgrade the first armor piece, and between five Rubies or 10 Fire-Breath Horns to upgrade each subsequent one. For example, the Champion Leathers can be upgraded to +5 defense, allowing you to keep pace with a large group of enemies in most cold climates and the Snowquill Headdress can be upgraded up to +20 defense, providing you enough protection to withstand an entire raid with a few friends.
You can't upgrade armor in the same way as weapons. If you're playing as a Warrior then you should concentrate on upgrading your armor to increase physical strength or spell power. It's also worth saving your armor upgrades to use for armor you'll wear at the end of the game, such as the Ring of Lightning and Spectral Shield or the helmet you wear for the final boss fight, the Monter Parts Merchant's mask.
By giving the jeweler 10 Twinkling Titanite in Gerudo Town in Gerudo Town, you can unlock perks for your armor. It is generally recommended to save these upgrades for the weapon that you'll use to win the game. For instance the Longsword or Battleaxe. But it's useful to have some upgrades for the chest armor and helmets to let you get around a few monsters.
Potions
Potions are substances in bottles that, when consumed, give the user a temporary status effect. There are five kinds of potions that have different effects and durations. Some potions can be upgraded, enhancing their effectiveness. You can also enhance the effects of certain potions by adding glowstone dust and redstone.
Potion upgrades cost a certain amount of XP, which can be earned by crafting them on a crafting table or in an chest of the Alchemist. However, the cost of upgrading will vary based on the kind of potion you wish to upgrade, and also on the item's Mark Level and Rarity.
To upgrade a potions, right-click it in your inventory. Then, select "Upgrade" from the menu. This will open a GUI where you can select the potions you want to upgrade and the amount of XP they'll produce when upgraded. The upgrade of potions can be completed in batches of up to five at a single time, and the XP that they generate will be added to your current XP count.
Once a potion has been upgraded, it won't degrade until you use it again or break the bottle it's stored in. Clicking on the potion in your inventory will allow you to rename it.
Version 1.7.2 introduced a few changes to the mechanism of potions. Splash potions, for instance, now have a duration 0:08 instead of the 22.5 seconds displayed on the hover display for the item. The table of potion constructed from four Wood Planks, and two Glass. This allows it to be used by players playing Survival and Bedrock. Unlike the Java Edition, Bedrock edition potions are not able to be mixed in cauldrons. Also, putting a potion on a full cauldron drains the liquid and replenishes the bottle.
Finally, there are lingering potions, which are brewed with splash and dragon breath potions. Redstone can also be added to lingering potions to enhance their effect. The table of potions is organized more closely to the Java Edition, and new potions were added, such as potion of leaping, decomposition potion, and turtle master potions.
Trinkets
A trinket can be a small, inexpensive ornament or piece jewelry. It could also refer to a piece of art or a decoration that serves a purpose but isn't particularly significant such as a trinket. In certain cultures, a trinket can be used to show affection or friendship between family members.
Trinkets can be upgraded by players as well as weapons and armor, as well as potions. These can be upgraded by visiting an upgrade vendor and paying the appropriate currency. As with other upgrades to items trinkets are able to be traded out at any time without losing their status.
The upgrade vendors can be found in major cities and the capital of each zone, as well as in in dungeons. Upgrades for trinkets can be purchased using tokens, gold or fragments of a rare trinket.
Upgrades are a less expensive alternative to purchasing a new trinket. One can upgrade a trinket for as little 12 tokens. The new trinket will feature the same base ilvl of the older one, and include an additional 1% upgrade bonus.
Trinkets can be upgraded once the old ones are no longer needed and allows players to boost their power and value over time. They can be traded among players which makes them a good alternative to gold.
Players should upgrade their most important items first. This means that the best-in slot items for each class are first upgraded before their secondary gear and finally other pieces of equipment they will not replace in the near future (such as rings or cloaks). It is also important to consider your class's preferred stats when selecting which items to upgrade. If Haste and Crit are two of the most important stats to tank players, then they should upgrade their chest, helm and shoulders.
When they are no longer useful trinkets can be upgraded to a higher level. The new trinket has an additional 1% bonus. A re-upgrade, however, can cause damage to the trinket unless it is saved using the help of a Black Lion Salvage Kit, or a higher tier salvage tool. Upgrades to trinkets can be more expensive than other upgrades, but still less expensive than buying an entirely new trinket.