Summary of SE, SI Damage Boosts for All Classes

Spoiler: Thieves

Night Lord

• SE increases Triple Throw damage by 53%
• SI increases Triple Throw damage by 0%

Spoiler: Formulas

Code:

Triple Throw, SE vs. no SE: (0.65 * (150 + 100 + 140) + 0.35 * 150) / (0.5 * (150 + 100) + 0.5 * 150) = 1.53
Triple Throw, SI vs. no SI: 600/600 = 1 (Faster (2) post-booster)

Shadower

• SE increases Assasinate damage by 0%
• SI increases Assasinate damage by 0%
• SE increases Boomerang Step damage by 4.2%
• SI increases Boomerang Step damage by 0%

Spoiler: Formulas

Code:

Assasinate, SE vs. no SE: no effect
Assasinate, SI vs. no SI: 1380 / 1380 = 1 (Faster (2) post-booster)
Boomerang Step, SE vs. no SE: (0.15* (500 + 140) + 0.85 * 500) / 500 = 1.042
Boomerang Step, SI vs. no SI: 690 / 690 = 1 (Faster (2) post-booster)

Spoiler: Warriors

Dark Knight

• SE increases Spear Crusher damage by 12.35%
• SI increases Spear Crusher damage by 14.81% (Fast (4) weapon post-booster, e.g. Sky Skis)
• SI increases Spear Crusher damage by 13.79% (Fast (5) weapon post-booster, e.g. Dragon Faltizan)

Spoiler: Formulas

Code:

Spear Crusher, SE vs. no SE: (0.15* (170 + 140) + 0.85 * 170) / 170 = 1.1235
Spear Crusher, SI vs. no SI, Fast (4) post-booster: 930/810 = 1.1481
Spear Crusher, SI vs. no SI, Fast (5) post-booster: 990/870 = 1.1379

Hero

• SE increases Brandish damage by 4.25% (ACA)
• SI increases Brandish damage by 19.04% (Fast (4) weapon post-booster, e.g. Dragon Claymore)
• SI increases Brandish damage by 9.52% (Faster (3) weapon post-booster, e.g. Stonetooth Sword)
• SI increases Brandish damage by 0% (Faster (2) weapon post-booster, e.g. Red Katana)

Spoiler: Formulas

Code:

Brandish, SE vs. no SE: (0.15 * (260 * 1.9 + 140) + 0.85 * 260 * 1.9) / (260 * 1.9) = 1.0425
Brandish, SI vs. no SI, Fast (4) post-booster: 750/630 = 1.1904
Brandish, SI vs. no SI, Faster (3) post-booster: 690/630 = 1.0952
Brandish, SI vs. no SI, Faster (2) post-booster: 630/630 = 1

Paladin

• SE increases Blast damage by 3.5% (Holy Charge)
• SI increases Blast damage by 19.04% (Fast (4) weapon post-booster, e.g. Crushed Skull/Dragon Claymore)
• SI increases Blast damage by 9.52% (Faster (3) weapon post-booster, e.g. Stonetooth Sword)
• SI increases Blast damage by 0% (Faster (2) weapon post-booster, e.g. Red Katana)

Spoiler: Formulas

Code:

Blast, SE vs. no SE: (0.15* ((600 + 140) * 1.85) + 0.85 * 600 * 1.85) / (600 * 1.85)= 1.035
Blast, SI vs. no SI, Fast (4) post-booster: 750/630 = 1.1904
Blast, SI vs. no SI, Faster (3) post-booster: 690/630 = 1.0952
Blast, SI vs. no SI, Faster (2) post-booster: 630/630 = 1

Spoiler: Archers

Bowmaster

• SE increases Hurricane damage by 70.67%
• SI increases Hurricane damage by 0%

Spoiler: Formulas

Code:

Hurricane, SE vs. no SE: (0.65 * (100 + 100 + 140) + 0.35 * 100) / (0.5 * (100 + 100) + 0.5 * 100) = 1.7067
Hurricane, SI vs. no SI: no effect

Marksman

• SE increases Strafe damage by 84.8%
• SE increases Snipe damage by 0%
  
• SI increases Strafe damage by 14.28% (Fast (4) weapon post-booster)
• SI increases Snipe damage by 14.28% (Fast (4) weapon post-booster)

Spoiler: Formulas

Code:

Strafe, SE vs. no SE: (0.65 * (75 + 100 + 140) + 0.35 * 75) / (0.5 * (75 + 100) + 0.5 * 75) = 1.848
Snipe, SE vs. no SE: no effect
Strafe, SI vs. no SI: 720/630 = 1.1428 (Fast (4) post-booster)
Snipe, SI vs. no SI: 720/630 = 1.1428 (Fast (4) post-booster)

Spoiler: Pirates

Corsair

• SE increases Battleship Cannon damage by 5.25%
• SE increases Rapid Fire damage by 11.67%
  
• SI increases Battleship Cannon damage by 5% (Faster (3) weapon post-booster)
• SI increases Rapid Fire damage by 0% (Faster (3) weapon post-booster)

Spoiler: Formulas

Code:

Battleship Cannon, SE vs. no SE: (0.15 * (400 + 140) + 0.85 * 400) / 400 = 1.0525
Rapid Fire, SE vs. no SE: (0.15 * (180 + 140) + 0.85 * 180) / 180 = 1.1166
Battleship Cannon, SI vs. no SI: 630/600 = 1.05 (Faster (3) post-booster)
Rapid Fire, SI vs. no SI: no effect

Buccaneer

• SE increases Demolition damage by 4.56%
• SE increases Barrage damage by 7.5%
  
• SI increases Demolition damage by 8.96% (Faster (3) weapon post-booster)
• SI increases Barrage damage by 8.19% (Faster (3) weapon post-booster)

Spoiler: Formulas

Code:

Demolition, SE vs. no SE: (0.15 * (460 + 140) + 0.85 * 460) / 460 = 1.0456
Barrage, SE vs. no SE: (0.15 * (280 + 140) + 0.85 * 280) / 280 = 1.075
Demolition, SI vs. no SI: 2190/2010 = 1.0896 (Faster (3) post-booster)
Barrage, SI vs. no SI: 1980/1830 = 1.0819 (Faster (3) post-booster)

Spoiler: Mages

Ice Lightning/Fire Poison/Bishop

• SE increases all skill damage by 6%
• SI increases all skill damage by 0%

Spoiler: Formulas

Code:

Mage Skill, SE vs. no SE: 0.15 * 1.4 + 0.85 * 1 = 1.06
Mage Skill, SI vs. no SI: no effect

Formulas from Nise: https://forum.maplelegends.com/index.php?threads/nises-formula-compilation.36234/
I will correct any errors pointed out in the comments.

 

This is what I suspected, there was a commenter on a thread from way back who said "Sharp Eyes bonus damage is added before multiplying by 2 from berserk, whereas advanced combo attack and Paladin's elemental charges are done first then Sharp Eyes is added on to it afterwards." (https://forum.maplelegends.com/index.php?threads/how-does-sharp-eyes-actually-work.24337/). If this is the case I will update the hero/pally numbers in a bit.

Edit: Updated Hero/Pally SE numbers

Edit2: Apparently for pally SE is in fact applied first, which is what I had originally, so corrected once again