Things That Modify, or are Affected by the Critical Multiplier

[Elemental] Burst (Dungeon’s Master Guide&Magic Item Compendium) For all intents and purposes, these abilities are all the same thing, with the only difference being the damage type. Dessicating Burst and Psychokinetic burst have slightly smaller damage dice, but they also have damage types that are much more versatile than the standard flaming, icy, and shocking enchantments. Collision (Magic Item Compendium) It’s a bit odd to say this, but this is probably my favorite enchantment. While at first, a simple +5 damage doesn’t seem like a lot, but as a flat bonus, this enchantment is affected by your critical multiplier, which can rack up fast enough when you use this handbook. Fiercebane (Magic Item Compendium) Remember Sting from Lord of the Rings? It had this enchantment on it. A weapon with this enchantment glows when an enemy of the specified bane type comes within 60 ft of the wielder, even without line of sight, and will deal additional d10’s of damage based on your critical damage multiplier. Maiming (Magic Item Compendium) When you score a critical hit with a maiming weapon, it deals additional d6’s of damage based on your critical damage multiplier. Claws of the Ripper (Draconomicon) These enchanted scythe-like rings can be worn by any Dragon-type creature of Large size or bigger. When worn, this magic ring increases the critical multiplier of the dragon’s claws to x4. Dragondoom feat (Draconomicon) When a character with this feat makes an attack roll against a creature with the Dragon type, their critical multiplier increases as indicated on the relevant chart. Bow of the Mighty Dragonhunter (Draconomicon) This +2 dragonbane composite longbow gains a x5 multiplier when used against a creature of the Dragon type. Initiate of the Draconic Mysteries 9 (Draconomicon) The Deadly Strike ability increases the Initiate’s critical multiplier with unarmed strikes to x3. Weapon of Energy spell (Spell Compendium) This spell gives a weapon one of the elemental burst abilities, which stacks with any pre-existing versions of the enchantment what might be already present, assuming that the elements match. Claws of Energy power (Expanded Psionics Handbook) This Psychic Warrior power adds one of the elemental burst enchantments to the user’s claw attacks. Riding Boots (Dungeon Master’s Guide II) If you are mounted and wielding a lance, these magical boots increase your critical multiplier to x4 instead of x3. Master Thrower 1 (Complete Warrior) The Deadeye Shot ability increases the critical multiplier of any thrown weapon you wield by 1, and does not stack with any similar effect. Enlightened Fist 6 (Complete Arcane) From 6th-level onwards, the Fist of Energy ability grants you the flaming or shocking burst abilities if you expend a stunning strike attempt. Flame of Faith spell (Complete Divine) This 3rd level spell adds the flaming burst enchantment to any non-magical weapon that the caster uses it on. Disciple of Thrym 8 (Frostburn) As a move action, you can grant use the Icy Greataxe ability to give your greataxe the Icy Burst enchantment. Sacred/Profane Burst (Libris Mortis) These two enchantments are yet again [Elemental] Burst clones, dealing positive and negative energy damage respectively. Of note is that Sacred Burst appears to allow you to critical hit undead without jumping through any other hoops. Kaorti Resin (Random Encounters) For the low cost of an Exotic Weapon Proficiency feat, this weapon special material increases your critical damage multiplier to x4 if your weapon deals piercing or slashing damage. Obviously this will not stack with any other special materials or material-dependent effects. Manyfang Dagger (Forgotten Realms - Serpent Kingdoms) This +1 Dagger deals x4 damage on every hit, and on a critical hit, it deals x5 damage instead. Harrowheart (Book of Vile Darkness) This +2 Rapier deals x3 damage instead of x2 damage when used to crit Good-aligned creatures. Tiger Fang (Tome of Battle) This magical kukri’s critical damage multiplier increases as the wielder gains affinity with it over their career, ending with a x4 multiplier at level 20. Sakkratar’s Triple Strike (Forgotten Realms - Lost Empires of Faerun) This fifth level sorcerer/wizard spell grants the designated targets the ability to make two additional attacks on their full attack action for the duration of the spell. However, what we care about is that the weapons of anyone affected by this spell gains the keen and flaming burst properties for the duration of the spell. Overwhelming Critical feat (Epic Level Handbook) This feat grants you additional d6’s of damage based on your weapon’s critical multiplier. [Elemental] Blast (Epic Level Handbook) These more powerful versions of the elemental burst enchantments deal increases damage on a critical hit. [Alignment] Power (Epic Level Handbook) These alignment based weapons deal 3d6 damage and one negative level on every normal hit, both of which are multiplied when you roll a crit. Mark of Avernus feat (Fiendish Codex II: Tyrants of the Nine Hells) In addition to automatically confirming your critical hits, this feat grants a +4 (untyped!!) bonus to your attack and damage rolls, which will multiply based on your weapon’s critical multiplier just like your strength damage and the collision enchantment. Deepwood Sniper 2, 7 (Masters of the Wild: A Guidebook to Rangers, Druids, and Barbarians) 3.0 Material The archery prestige class increases the critical multiplier of any projectile weapon you wield by 1 at second level, then increases it again at level 7. (So that Greatbow I mentioned up above now has a critical multiplier of x5!) Forest Master 6 (Forgotten Realms - Faiths and Pantheons) Beginning at sixth level, this prestige class allows you to treat any maul wielded by the Forest Master as a +2 Icy or Shocking Burst weapon, determined by the wielder round by round. Silverstar 9 (Forgotten Realms - Faiths and Pantheons) Beginning at the 9th level of this prestige class, the Silverstar treats any heavy mace they wield as a +2 Shocking Burst weapon. Stormlord 8 (Complete Divine) From 8th level in this prestige class onwards, any spear or javelin wielded by the Stormlord counts as a shocking burst weapon. Dragonhunter (Magic Item Compendium) This enchantment increases the critical multiplier of any projectile weapon affected by it by 1 when targeting a creature of the dragon type. Sadly the strength damage dealt by this weapon doesn’t multiply, and if you put the keen enchantment or use the bless weapon spell on a weapon with this enchantment it doesn’t work. Burning Sword spell (Spell Compendium) A weapon that has this spell cast on it becomes a flaming burst weapon for the duration. Great Bite feat (Eberron Campaign Setting) A Longtooth Shifter with this feat increases the critical multiplier of their natural bite attack to x3 instead of only x2.