Each of the item properties has a maximum intensity (commonly called MAX) that it can possibly be spawned with. The intensity and combination of these determines it's value to other players. With UO: Mondain's Legend, some of these were raised, and are not accurately reflected anywhere but here on UOF!

Entries in yellow are linked to follow-on posts that discuss aspects in depth.

The normal limit on magic properties is 5. Most runic crafted items have 4 (but better chance of all high end intensity. Some Artifacts and wood enhanced items can exceed this.

The below list is the normal limits on intensity. Certain artifacts can and do exceed these.

Next to each heading is the common abbreviation used in game.

For a concise listing of item property, and intensity that may spawn, refer to the UO Playguide.

This is a modified excerpt of UO.Stratics It has been changed to reflect new updates from the Five on Friday and the past few publishes.

Balanced
Intensity Range: N/A
Found On: Bows
The Balanced property means that even though it requires two hands to wield the weapon, it is still possible to drink potions without unequipping the weapon.

Cold Damage
Intensity Range: 0 - 100. This is NOT extra damage, merely which resists the damage is calculated against.
Found On: Weapons, quivers

Cold Resist (CR)
Intensity Range: 1 - 15, added to the BASE resistance of the item.
Found On: Weapons, Armor, Jewelry, shields
All resists (Physical, fire, cold, poison, energy) are effective against spells and physical attacks.

Damage Increase (DI)
Intensity Range: 1 - 50. Can be enhanced to 60 if it is a bow or wooden weapon.
Found On: Weapons, Jewelry, select artifacts

Defense Chance Increase (DCI)
Intensity Range: 1 - 15
Found On: Weapons, Shields, Jewelry, select artifacts

Dexterity Bonus
Intensity Range: 1 - 8
Found On: Jewelry, select artifacts

Energy Damage
Intensity Range: 0 - 100. This is NOT extra damage, merely which resists the damage is calculated against.
Found On: Weapons, quivers

Energy Resist (ER)
Intensity Range: 1 - 15, added to the base resists of the item.
Found On: Weapons, Shields, Armor, Jewelry

Enhance Potions (EP)
Intensity Range: 5 - 25 (30% on Alchemist bauble, 75% on Ecru Citrine ring)
Found On: Jewelry
Stacks with Alchemy bonus. Increases the effectiveness of potions. Heal more, cure more, explode for more.

Faster Cast Recovery (FCR)
Intensity Range: 1 - 3
Found On: Jewelry, Spellbooks, Select artifacts
For every point of Faster Cast Recovery you have the delay is shortened by 0.25 second.

Faster Casting (FC)
Intensity Range: 1
Found On: Weapons, Shields, Jewelry, Spellbooks, Select artifacts.
Faster Casting makes you able to cast Magery and Paladin spells faster than normal. For every point in Faster Casting you have the casting time is shortened by 0.25 second.

Fire Damage
Intensity Range: 0 - 100. This is NOT extra damage, merely which resists the damage is calculated against.
Found On: Weapons

Fire Resist (FR)
Intensity Range: 1 - 15
Found On: Weapons, Armor, Jewelry

Hit Chance Increase (HCI)
Intensity Range: 1 - 15
Found On: Weapons, Shields, Jewelry, select artifacts
Adds to your chance to hit, based on the weapon skill you are using. If you have 0 weapon skills (including wrestling), and 15% HCI, and are fighting something with 100 skill, then you have a whopping 9% chance to actuall hit it. Source: Stratics calculator

Hit Cold Area
Intensity Range: 2 - 50. 100% on select artifacts.
Found On: Weapons
Limited to a 5 tile radius of effect. Hits EACH creature in range for the area damage. Very effective when used with whirlwind type special moves.

Hit Dispel
Intensity Range: 2 - 50
Found On: Weapons
Will dispel summoned creatures only on hit. This effect is resistable.

Hit Energy Area
Intensity Range: 2 - 50 (100% on select artifact)
Found On: Weapons
Limited to a 5 tile radius of effect. Hits EACH creature in range for the area damage. Very effective when used with whirlwind type special moves.

Hit Fire Area
Intensity Range: 2 - 50
Found On: Weapons
Limited to a 5 tile radius of effect. Hits EACH creature in range for the area damage. Very effective when used with whirlwind type special moves.

Hit Fireball
Intensity Range: 2 - 50
Found On: Weapons
A weapon with Hit Fireball will have a percentage chance on each hit to cast the magery spell fireball on the target.

Hit Harm
Intensity Range: 2 - 50 ( Higher on select artifacts)
Found On: Weapons
A weapon with Hit Harm will have a percentage chance on each hit to cast the magery spell harm on the target.

Hit Life Leech (HLL)
Intensity Range: 2 - 100
Found On: Weapons, necromancer effects
Restores Mana based on the swing speed, and % mana leech of the weapon. For a chart of this, refer here. For Mr. Tacts explanation, click here.

Hit Lightning
Intensity Range: 2 - 50 (Higher on select artifacts)
Found On: Weapons
A weapon with Hit Lightning will have a percentage chance on each hit to cast the magery spell lightning on the target.

Hit Lower Attack (HLA)
Intensity Range: 2 - 50
Found On: Weapons

A weapon with Hit Lower Attack will have a percentage chance on each hit to lower the hit chance of the target for a short time. The amount the hit chance is lowered is equal to a Hit Chance Increase of -25. The effect lasts for about 5-10 seconds and is not cumulative. This effect is global (everyone gets benefit), timer resets for each succesful strike. FOF 66

Hit Lower Defense (HLD)
Intensity Range: 2 - 50
Found On: Weapons, select artifacts
A weapon with Hit Lower Defense will have a percentage chance on each hit to lower the defensive capabilities of the target for a short time. The amount defense is lowered is equal to a Defense Chance Increase of -25. The effect lasts for about 8 seconds and is [b]not cumulative.[/B] This effect is global (everyone gets benefit), timer resets for each succesful strike. FOF 66

Hit Magic Arrow
Intensity Range: 2 - 50
Found On: Weapons
A weapon with Hit Magic Arrow will have a percentage chance on each hit to cast the magery spell magic arrow on the target. This does fire damage as if you cast the spell at 0 eval. (Five on Friday question submitted, will update when answer received)

Hit Mana Leech (HML)
Intensity Range: 2 - 100
Found On: Weapons, necromancer effects
Restores Mana based on the swing speed, and % mana leech of the weapon. For a chart of this, refer here. For Mr. Tacts explanation, click here.

Hit Physical Area
Intensity Range: 2 - 50
Found On: Weapons
Limited to a 5 tile radius of effect. Hits EACH creature in range for the area damage. Very effective when used with whirlwind type special moves.

Hit Point Increase
Intensity Range: 1 - 5
Found On: Armor
Hit Point Increase increases your Hit Point maximum hit points by 1 for every point of Hit Point Increase you have.

Hit Point Regeneration (HPR)
Intensity Range: 1 - 2
Found On: Armor, bloodwood enhanced items, certain artifacts
Hit Point Regeneration increases the rate at which you regain hit points. For every point of Hit Point Regeneration you have, you will regenerate 0.1 hit point every second.

Hit Poison Area
Intensity Range: 2 - 50
Found On: Weapons
Limited to a 5 tile radius of effect. Hits EACH creature in range for the area damage. Very effective when used with whirlwind type special moves.

Hit Stamina Leech
Intensity Range: 2 - 50
Found On: Weapons, necromancer effects
Restores Mana based on the swing speed, and % mana leech of the weapon. For a chart of this, refer here. For Mr. Tacts explanation, click here.

Intelligence Bonus
Intensity Range: 1 - 8
Maximum Attainable: 22(40)
Found On: Jewelry, Spellbooks, cetain artifacts
Intelligence Bonus increases your Intelligence Stat by 1 point for every point of Intelligence Bonus you have.

Lower Mana Cost
Intensity Range: 1 - 8
Found On: Armor, Jewelry, Spellbooks
Lower Mana Cost will lower the amount of mana you need to be able to cast a spell or use a special move.

Lower Reagent Cost (LRC)
Intensity Range: 1 - 20
Found On: Armor, Jewelry, Spellbooks, certain artifacts
Lower Reagent Cost lowers the amount of reagents you need to cast spells. Every time you cast a spell there is a chance that no reagents will be used.
If you have 100% Lower Reagent Cost, you will not need to carry reagents at all. This works for Magery, Necromancy spells and Chivalry abilities. For chivalry, you will still need to have the required tithing for the ability, but they will not get used.
Lower Reagent Cost does not have any effect for the Alchemy or Inscription skills.

Lower Requirements
Intensity Range: 10 - 100
Found On: Weapons, Armor, Shields
Lower Requirements lowers any stat requirements the item has by a percentage. If an item has 100% Lower Requirements, it will have no stat requirements. Extrememly useful for platemail.


Luck
Intensity Range: 1 - 100
Found On: Weapons, Armor, Shields, Jewelry, certain artifacts
Luck increases your chances of getting better loot when you kill a monster. It has a chance of increasing the number of items you find, the number of properties the items have and how high the properties are. See "what is luck?" for more info.
Normal magic items do not spawn with more than 100 Luck and shields actually don't spawn with Luck at all, but due to the enhancing that can be done by crafters, armor and weapons can get as high as 140 Luck and shields can get 40 Luck.

Mage Armor
Intensity Range: N/A
Found On: Armor
The Mage Armor property means that you will be able to meditate actively while wearing that piece of armor, even though it normally wouldn't allow you to do that. This of course also means that it doesn't slow down your passive regeneration rate.
Mage Armor also does not increase the difficulty of using the stealth skill, like it normally would.

Mage Weapon
Intensity Range: -29 to -20 normally. Some artifacts are lower.
Found On: Weapons
A Mage Weapon will allow you to use your magery skill instead of the appropriate combat skill for that weapon. You will not be able to use the special moves on the weapon unless you have sufficient skill points in the right combat skill though.
Mage Weapons have the small side effect of lowering your magery skill by up to 30 points when you wield them. Ex. A mage with 120 makery skill using a -30 wand is calculated in combat at 90 macing skill.

Mana Increase
Intensity Range: 1 - 8
Found On: Armor, Spellbooks, certain artifacts
Mana Increase increases your maximum mana by 1 point for every point of Mana Increase you have.

Mana Regeneration (MR)
Intensity Range: 1 - 2
Found On: Armor, Spellbooks, certain artifacts
Mana Regeneration increases the rate at which you regain mana. For every point of Mana Regeneration you have, you will regenerate 0.1 point of mana every second. Pub 46 Gave a new forumla, FoF submitted 16 August 2007.
Night Sight
Intensity Range: N/A
Found On: Armor, Jewelry, certain artifacts
Night Sight makes it so that you can't tell the difference between night and day, because while wearing an item with Night Sight it will never become dark. It works the same way as the magery spell of the same name.

Physical Damage
Intensity Range: 10 - 100
Intensity Range: 10 - 100. This is NOT extra damage, merely which resists the damage is calculated against.
Found On: Weapons, quivers

Physical Resist (PyR)
Intensity Range: 1 - 15
Found On: Weapons, Armor, Jewelry, shields
Physical Resist allows you to resist a percentage of all physical damage that is inflicted on you.

Poison Damage
Intensity Range: 10 - 100. This is NOT extra damage, merely which resists the damage is calculated against.
Found On: Weapons, quivers .

Poison Resist (PR)
Intensity Range: 1 - 15
Found On: Weapons, Armor, Jewelry, shields
Poison Resist allows you to resist a percentage of all poison damage that is inflicted on you.

Reflect Physical Damage
Intensity Range: 1 - 15
Found On: Armor, Shields
Reflect Physical Damage will reflect a percentage of any physical damage that is inflicted on you back onto the one who inflicted it.

Replenish Charges
Intensity Range: N/A
Found On: Instruments
Replenish Charges will recharge the uses of your instrument at a rate of 1 every 5 minutes.

Self Repair
Intensity Range: 1 - 5
Found On: Armor, Shields
Items with the Self Repair property will have a chance of regaining 1 point of durability over time. Must be in your pack or worn to repair.

Skill Bonus
Intensity Range: 1 - 15
Found On: Jewelry, Spellbooks, certain artifiacts
Skill Bonus increases your skillpoints in the skill named on the item, not any higher than your cap for that skill allows though.
Skill Bonus items can be found for all the skills you can also find powerscrolls for in Felucca Champion Spawns.

Slayer
Intensity Range: N/A
Found On: Weapons, Instruments, Talismans
A weapon with the Slayer property will do double damage against all creatures within a certain group.
An instrument with the Slayer property will increase your success chances when using bard skills against all creatures within a certain group.

For a list of the different Slayer groups, go here.

Spell Channeling (S/C)
Intensity Range: N/A
Found On: Weapons, Shields, Wands
Spell Channeling items allow you to cast magery spells even though you have a weapon or shield equipped.

The Spell Channeling property will always come with a Faster Casting -1 property, which means that if an item also spawns with Faster Casting 1, it will simply only show Spell Channeling because the two Faster Casting properties cancel each other out.

Spell Damage Increase (SDI)
Intensity Range: 1 - 12
Found On: Jewelry, Spellbooks
Spell Damage Increase increases the amount of damage your spells inflict.
Spellbooks can only be crafted with a range of 1 - 9 Spell Damage Increase.
Spell Damage Increase is capped at 15% for all Player vs. Player combat, but there is no cap for Player vs. Monster.

Stamina Increase
Intensity Range: 1 - 8

Found On: Armor
Stamina Increase increases your maximum stamina by 1 point for every point of Stamina Increase you have.

Stamina Regeneration
Intensity Range: 1 - 3
Found On: Armor
Stamina Regeneration increases the rate at which you regain stamina. For every point of Stamina Regeneration you have, you will regenerate 0.1 point of stamina every second.

Strength Bonus
Intensity Range: 1 - 8
Found On: Jewelry
Strength Bonus increases your Strength Stat by 1 point for every point of Strength Bonus you have.

Swing Speed Increase (SSI)
Intensity Range: 5 - 30
Found On: Weapons
Swing Speed Increase increases the base speed at which you swing your weapon.
Although Swing Speed Increase is not capped, swing speed is capped at 1 swing per second.

Use Best Weapon Skill (UBWS)
Intensity Range: N/A
Found On: Weapons
Use Best Weapon Skill means that instead of needing the appropriate weapon skill to wield the weapon effectively you can use any melee weapon skill and still get the best result.

Velocity
Intensity range:1-50? (needs to be verified with heartwood runic, anyone want to donate one for the cause?)
Found on: Runic crafted bows and M'arties
Additional to hit property akin to on hit lightning, but ALOT more damage (60-72 damage). Damage ranges are based on distance from the target (1-8 tiles). Farther away, more damage dealt. The % range is the chance for velocity to activate.