Weapon dice multiplier

With Update 14, upper tier weapons in game, that previously had irregular damage dices (such as Green Steel weapons (History)) are updated in order to standardize them among various weapon types. New mechanic called Weapon dice multiplier or Base Damage Dice modifier is now applied to weapon dice roll. It is shown on the weapon description window in the format of "1.5[1d8]" and such, in this case, 1d8 is weapon specific dice roll and 1.5 is what is considered as multiplier (1.5-1=0.5 is what is considered modifier).

Weapon dice multiplier is applied to weapon damage before enhancement bonus and before critical hit multiplier. Spell buffs such as Deadly Weapons, and feats such as Point Blank Shot may have impact on this value.

Further with Update 19, all random generated items not only calculate their ML, but also weapon and shields apply based on the total enhancement value a standardized multiplier. Thus all weapons and shields with an Enhancement value of +11 or higher gain an additional +1[W] damage dice, for the default Epic weapon multiplier of 2. Additionally the notion of Paragon Weapons where introduced for weapons and shields with a total enhancement value of +6 or higher. They get an additional +0.5[W] damage dice and as such have a total multiplier equivalent with Green Steel.

Weapon-specific

 * Nightforge weapons from the Black Anvil Mines - 1.50
 * Green Steel weapons - 1.50
 * Alchemical weapons - They all got standardized to 2.0 in Update 15 Patch 2
 * Previously, they had varied multipliers: 1.50, 1.65, 1.70, 1.75, 1.80, 1.85, 1.90, 1.95, 2.0 depending on type. These varying values defeat the whole purpose of the change, intention behind this design is unknown. See this chart for detailed numbers.
 * Epic named weapons - generally 2.0
 * Epic Sword of Shadow - 2.5
 * Levels 20+ random-gen weapons - 2.0
 * Cormyrian weapons - 2.0
 * Drow weapons from The House of Rusted Blades - 3.0
 * Relic weapons from Caught in the Web - 2.5
 * Vorpal weapons - 1.5

Unarmed-related

 * Unarmed Strike (Monk granted feat) - 1.5, 2.0, 2.5, 3.0, 3.5 to centered, unarmed attacks at levels 4, 8, 12, 16 and 20
 * Reinforced Fists - 0.5 (Item effect granted to unarmed attacks, such as Garments of Equilibrium)
 * A Dance of Flowers (Grandmaster of Flowers destiny) - 0.5, 1.0 and 1.5 to unarmed attacks
 * Dancing with Flames (Grandmaster of Flowers destiny) - 0.25, 0.5 and 0.75 to unarmed attacks while in Fire Stance