Damage Calculation/Additive Sources

Name	Description	Implementation
Swords
Hollow Wand Ability Ichor Pool	Grant […] +30% Damage […] Stacks up to 3 times.	$Additive Buff = 30 \times stacks$
Bows

Name	Description	Implementation
Warden Helmet Ability: Brute Force	Halves your Speed but grants +20% base weapon damage for every 25 Speed.	$Additive Buff = 20 \times \frac{Speed}{25} + 1$
Magma Lord Armor Pieces	Damage taken from  Magmatic mobs is reduced […] and damage dealt is increased by 1.3x.	$Additive Buff = 30 \times Pieces$
Thunder Armor Pieces	Damage taken from  Magmatic mobs is reduced […] and damage dealt is increased by 1.2x.	$Additive Buff = 20 \times Pieces$ ^[Confirm]
Taurus Helmet, Flaming Chestplate and Moogma Leggings	Damage taken from  Magmatic mobs is reduced […] and damage dealt is increased by 1.1x.	$Additive Buff = 10 \times Pieces$ ^[Confirm]
Tuxedo Full Set Bonus: Dashing	Max health set to n. Deal +k% more Damage! n = { 75, 150, 250 } ; k = { 75, 100, 150 }	$Additive Buff = k$
Final Destination Armor Full Set Bonus: Vivacious Darkness	+100% Damage against Endermen	$Additive Buff = 100$ Condition: Endermen including Zealots, Zealot Bruisers, Voidling Fanatics, and Voidling Extremists.^[Confirm]
Maxor's Armor	[…] and increases your arrow damage by 5% per piece.	$Additive Buff = 5 \times Pieces$
Terror Armor	[…] arrow attacks grant 1 stack of Hydra Strike ⁑. Each Hydra Strike ⁑ stack grants +k% Damage. k = [ 2, 15 ]	$Additive Buff = k \times stacks$
Crimson Armor (Infernal)	[…] melee attacks gain 1 stack of ᝐ Dominus. Each ᝐ Dominus stack grants […] and 10% Damage.	$Additive Buff = 10 \times stacks$ Condition: Melee Damage
Crimson Armor Swipe	At 10 stacks also swipe in a random direction hitting every enemy in the path of the swipe. The first time an enemy is hit by a swipe, it takes double the usual damage. Swipe Strength = [ 0.5, 3 ]	The initiating Hits Damage and Additive Multiplier are used to calculate the Damage of the swipe: ${Damage}_{swipe} = {Damage}_{Hit} \times \frac{Swipe Strength \times 100}{{Additive Multiplier}_{Hit}}$ Due to this, Crimson Swipe can be treated as an increase of the Additive Multiplier, separated into a second hit.^[1]
Reaper Armor	Trolling The Reaper: Deal +100% damage to  Undead Mobs but 1% to all other Mobs.	$Multiplier = {\begin{matrix} Undead enemies & : & Additive Buff = 100 \\ Non- Undead enemies & : & Multiplicative Multiplier = 0.01 \end{matrix}$

Name	Description	Implementation
Necklaces
Belts
Cloaks
Bracelet
Gloves

Pets

Name	Description	Implementation
Golden Dragon Pet Legendary Treasure perk	Gain +k% damage for every million coins in your bank. (Max 1000·k%) k = [ 0.12625, 0.25 ] ; 1000·k = [ 126.25, 250 ]	$Additive Buff = \min (k \times ⌊ \frac{coins in bank}{1 000 000} ⌋, 1000 \times k)$
Lion Pet King of the Jungle perk	Deal +k% damage against mobs that have attacked you. k = [ 1.5, 150 ]	$Additive Buff = k$ Condition: Description accurate^[Confirm].
Wither Skeleton Pet Perk Wither Blood	Deal k% more damage against  Wither mobs. k = [ 1, 100 ]	$Additive Buff = k$
Kuudra Pet Perk Kuudra Specialist	Increases all damage to Kuudra and his minions by 20%.	$Additive Buff = 20$
Ender Dragon Pet Perk End Strike	Deal +k% more damage to  Ender mobs. k = [ 2, 200 ]	$Additive Buff = k$
Pigman Pet Perk Giant Slayer	Deal +k% damage to monsters Level 50+ and +n% damage to monsters Level 100+.	$Additive Buff =$ ${\begin{matrix} Level < 50 & : & 0 \\ 50 \leq Level < 100 & : & k \\ Level \geq 100 & : & n \end{matrix}$
Skeleton Pet Perk Bone Arrows	Increase arrow damage by k% which is doubled while in dungeons. k = [ 0.1, 75 ]	$Additive Buff = 2 \times k$
Tiger Pet Perk Apex Predator	Deal +k% damage against targets with no other mobs within 15 blocks. k = [ 1, 100 ]	$Additive Buff = k$
Zombie Pet Perk Rotten Blade	Deal k% more damage to  Undead mobs. k = [ 26.25, 150 ]	$Additive Buff = k$
Lion Pet Perk First Pounce	First Strike, Triple-Strike and Combo are k% more effective. k = [ 1, 100 ]	^[Confirm]
Megalodon Pet Perk Blood Scent	Deal up to +k% Damage based on the enemy's missing health. k = [ 51, 150 ]	$Additive Buff = k$
T-Rex Pet Perk Close Combat	Deal k% more damage to enemies within 1.5 blocks. k = [ 1.5, 150 ]	$Additive Buff = k$
Giraffe Pet Perk Long Neck	Increases your melee damage by k% if you are more than 3 blocks away from the target. k = [ 50.5, 100 ]	$Additive Buff = k$

Pet Items

Name	Description	Implementation

Name	Description	Implementation
Ring of Love	Grants a 1 in X chance to deal +100% damage.	$Additive Buff = 100$
Runeblade Talisman, Runeblade Ring and Runeblade Artifact.	Increases the Damage dealt to  Woodland mobs by k%.	$Additive Buff = k$ ^[Confirm]
Draconic Talisman, Draconic Ring and Draconic Artifact.	Increases damage dealt to Dragons by k%.	$Additive Buff = k$

Name	Description	Implementation	Applied To
Optical Lens Reforge Precise	Deal +10% extra damage when arrows hit the head of a mob.	$Additive Buff = 10$	Bows
Kaleidoscopic Mineral Reforge Headstrong	Deal +8% extra damage when arrows hit the head of a mob.	$Additive Buff = 8$	Bows

Sword

Name	Description	Value(s)	Implementation	Described Condition Accurate
Sharpness	Increases melee damage dealt by k%.	5, 10, 15, 20, 30, 40, 50	$Additive Buff = k$	yes
Prosecute	Increases damage dealt by k% for every percent of health your target has.	0.1, 0.2, 0.3, 0.4, 0.7, 1	$Additive Buff = k \times \frac{current {HP}_{enemy}}{max {HP}_{enemy}}$	yes
Execute	Increases damage dealt by k% for each percent of health missing on your target.	0.2, 0.4, 0.6, 0.8, 1, 1.25	$Additive Buff = k \times \frac{max {HP}_{enemy} - current {HP}_{enemy}}{max {HP}_{enemy}}$	yes
Giant Killer	Increases damage dealt by k% for each percentage of health your target has above you, up to n%.	k = { 0.1, 0.2, 0.3, 0.4, 0.6, 0.9, 1.2 } n = { 5, 10, 15, 20, 30, 45, 65 }	$Additive Buff =$ ${\begin{matrix} {HP}_{enemy} \geq {HP}_{player} & : \min (k \times \frac{{HP}_{enemy} - {HP}_{player}}{0.01 \times {HP}_{player}}, n) \\ {HP}_{enemy} < {HP}_{player} & : 0 \end{matrix}$ ^[Confirm]	yes
Titan Killer	Increases damage dealt by k% for every 100 Defense your target has, up to n%.	k = { 2, 4, 6, 8, 12, 16, 20 } n = { 6, 12, 18, 24, 40, 60, 80 }	$Additive Buff = \min (k \times ⌊ \frac{{def}_{enemy}}{100} ⌋, n)$ ^[Confirm]	^[Confirm]
First Strike	Increases the melee damage dealt by k% for the first hit on a mob.	25, 50, 75, 100, 125	$Additive Buff = k$	yes
Triple-Strike	Increases the melee damage dealt by k% for the first three hits on a mob.	10, 20, 30, 40, 50	$Additive Buff = k$	yes
One For All	Removes all other enchants but increases your damage by 500%.		$Additive Buff = 500$	yes

Bow

Name	Description	Value(s)	Implementation	Described Condition Accurate
Power	Increases bow damage by k%.	8, 16, 24, 32, 40, 50, 65	$Additive Buff = k$	yes
Snipe	Arrows deal +k% damage for every 10 blocks traveled.	1, 2, 3, 4	$Additive Buff = \frac{Δ_{position} \times k}{10}$ $Δ_{position}$ is the euclidean distance between the Player position and the Enemy position at the time of arrow impact. ^[Confirm]	yes

Fishing Rod

Name	Description	Value(s)	Implementation	Described Condition Accurate
Spiked Hook	Fishing rod deals k% more damage to monsters.	5, 10, 15, 20, 25, 30, 35	$Additive Buff = k$	^[Confirm]

Armor

Name	Description	Value(s)	Implementation	Described Condition Accurate
Habanero Tactics	Deal +k% damage with Slayer weapons.	20, 25	$Additive Buff = k$	yes

Other

Name	Description	Value(s)	Implementation	Described Condition Accurate
Gravity	Increase damage dealt to  Airborne mobs by k%.	5, 10, 15, 20, 30, 40	$Additive Buff = k$	yes
Impaling	Increase damage dealt to  Aquatic mobs by k%.	5, 10, 15, 20, 30	$Additive Buff = k$	yes
Bane of Arthropods	Increase damage dealt to  Arthropod mobs by k%.	5, 10, 15, 20, 30, 40, 50	$Additive Buff = k$	yes
Cubism	Increase damage dealt to  Cubic mobs by k%.	5, 10, 15, 20, 30, 40	$Additive Buff = k$	yes
Ender Slayer	Increase damage dealt to  Ender mobs by k%.	5, 10, 15, 20, 30, 40, 50	$Additive Buff = k$	yes
Smoldering	Increase damage dealt to  Infernal mobs by k%.	5, 10, 15, 20, 30	$Additive Buff = k$	yes
Pyroclasm	Increase damage dealt to  Magmatic mobs by k%.	10, 20, 30, 40, 60, 80	$Additive Buff = k$	^[Confirm]
Smite	Increase damage dealt to  Skeletal,  Undead and  Wither mobs by k%.	5, 10, 15, 20, 30, 40, 50	$Additive Buff = k$	yes
Woodsplitter	Increase damage dealt to  Woodland mobs by k%.	5, 10, 15, 20, 30, 40	$Additive Buff = k$	^[Confirm]
Combo	Increases your damage by k% per kill up to n kills within m seconds.	k = { 1, 2, 3, 4, 5 } n = { 2, 4, 6, 8, 10 } m = { 2, 4, 6, 8, 10 }	$Additive Buff = k \times \min (Kills, n)$	^[Confirm]
Swarm	Increases your damage by k% for each enemy within 10 blocks. Maximum of 10 enemies.	2, 4, 6, 8, 10	$Additive Buff = k \times \min (Enemies in range, 10)$	^[Confirm]

Name	Description	Implementation
Thorn Shard Dominance	Gain +k% more Damage when at full health.	$Additive Buff = k$
Kada Knight Shard Lifeline	When under 20% maximum HP, your Defense and Damage increase by k%.	$Additive Buff = k$ ^[Confirm]
Spike Shard Payback	When hit, your next hit deals +k% damage.	$Additive Buff = k$
Soul of the Alpha Shard Combo	Deal +k% more Damage per Grandma Wolf Pet combo. (Max 50 combo)	$Additive Buff = k \times \min (Combo Amount, 50)$
Skeletor Shard Deadeye	Increases damage from ranged weapons by +k%.	$Additive Buff = k$
Barbarian Duke X Shard Warrior	Increases melee damage by +k%.	$Additive Buff = k$
Power Dragon Shard Elite	Grants +k% more Damage against BOSS and Miniboss mobs.	$Additive Buff = k$

Ruler Attributes

Ruler Attributes give +3 Additive Damage per Attribute level, up to +30 Additive Damage.
Ruler Attributes are buffed by Caiman Shard Attribute Echo of Ruler and Tiamat Shard Attribute Echo of Echoes.
With both relevant Echo Attributes at MAX Level (10), Ruler Attributes are multiplied by 1.3, resulting in a maximum increase of +39 Additive Damage.

Name	Description	Implementation
Bluebird Shard Airborne Ruler	Grants +k% more Damage against  Airborne mobs.	$Additive Buff = k$
Sprawl Shard Animal Ruler	Grants +k% more Damage against  Animal mobs.	$Additive Buff = k$
Duplico Shard Arcane Ruler	Grants +k% more Damage against  Arcane mobs.	$Additive Buff = k$
Flaming Spider Shard Arthropod Ruler	Grants +k% more Damage against  Arthropod mobs.	$Additive Buff = k$
Shrieky Tiki Shard Construct Ruler	Grants +k% more Damage against ︎ Construct mobs.	$Additive Buff = k$
Queen Ant Shard Elusive Ruler	Grants +k% more Damage against  Elusive mobs.	$Additive Buff = k$
Zealot Bruiser Shard Ender Ruler	Grants +k% more Damage against  Ender mobs.	$Additive Buff = k$
Polaris Shard Frozen Ruler	Grants +k% more Damage against  Frozen mobs.	$Additive Buff = k$
Wetwing Shard Humanoid Ruler	Grants +k% more Damage against  Humanoid mobs.	$Additive Buff = k$
Flare Shard Infernal Ruler	Grants +k% more Damage against  Infernal mobs.	$Additive Buff = k$
Stridersurfer Shard Magmatic Ruler	Grants +k% more Damage against  Magmatic mobs.	$Additive Buff = k$
Minos Hunter Shard Mythological Ruler	Grants +k% more Damage against  Mythological mobs.	$Additive Buff = k$
Praying Mantis Shard Pest Ruler	Grants +k% more Damage against  Pest mobs.	$Additive Buff = k$
Chill Shard Skeletal Ruler	Grants +k% more Damage against  Skeletal mobs.	$Additive Buff = k$
Driftling Shard Subterranean Ruler	Grants +k% more Damage against  Subterranean mobs.	$Additive Buff = k$
Zombie Soldier Shard Undead Ruler	Grants +k% more Damage against  Undead mobs.	$Additive Buff = k$
Ent Shard Woodland Ruler	Grants +k% more Damage against  Woodland mobs.	$Additive Buff = k$

Name	Description	Implementation
Combat Warrior perk	Deal k% more damage to mobs. k = [ 4 , 210 ]	$Additive Buff = k$
Spider Tamer Spider Essence Shop perk Bane	Increases damage dealt to Spiders by k%. k = { 3, 6, 9, 12, 15 }	$Additive Buff = k$
Archery Potion	Increases bow damage by k%.	$Additive Buff = k$
Berserk Dungeon Class Perk Lust for Blood	Every time you hit an enemy, increases the damage you deal to that enemy by m% up to a maximum of k%.	$Additive Buff = \min (hit count \times m, k)$

↑ $\begin{matrix} {Damage}_{combined} & = {Damage}_{swipe} + {Damage}_{Hit} \\ = {Damage}_{Hit} \times \frac{Swipe Strength \times 100}{{Additive Multiplier}_{Hit}} + {Damage}_{Hit} \\ = {Damage}_{Hit} \times \frac{Swipe Strength \times 100}{{Additive Multiplier}_{Hit}} + {Damage}_{Hit} \times \frac{{Additive Multiplier}_{Hit}}{{Additive Multiplier}_{Hit}} \\ = {Damage}_{Hit} \times \frac{Swipe Strength \times 100 + {Additive Multiplier}_{Hit}}{{Additive Multiplier}_{Hit}} \end{matrix}$

[1] $\begin{matrix} {Damage}_{combined} & = {Damage}_{swipe} + {Damage}_{Hit} \\ = {Damage}_{Hit} \times \frac{Swipe Strength \times 100}{{Additive Multiplier}_{Hit}} + {Damage}_{Hit} \\ = {Damage}_{Hit} \times \frac{Swipe Strength \times 100}{{Additive Multiplier}_{Hit}} + {Damage}_{Hit} \times \frac{{Additive Multiplier}_{Hit}}{{Additive Multiplier}_{Hit}} \\ = {Damage}_{Hit} \times \frac{Swipe Strength \times 100 + {Additive Multiplier}_{Hit}}{{Additive Multiplier}_{Hit}} \end{matrix}$

[1]