I'll Just Leave This Here...

So I was thinking about Thornmail because someone said that it was really OP in a thread recently.

Sion vs. Caitlyn at level 18

Sion

3 Quintessences of Armor 9 Marks of Hybrid Penetration 9 Seals of Scaling Health 9 Glyphs of Scaling Magic Resist

Mercury’s Treads Frozen Heart Locket of the Iron Solari Randuin’s Omen Spirit Visage Thornmail

300 CS with 70% CS Rate 90 waves

Soul Furnace Passive

~17 health per wave +16 health from taking raptors at start

(17*90)・0.70 + 16 = 1087 bonus health

23.94・9 = 215.46 bonus health (from runes and masteries, not including Juggernaut)

Let’s assume there is only Caityln nearby

4.26・3 + 5 + 3 = 20.78 bonus armor (from runes and masteries, not including Enchanted Armor)

Health: 1784 + 400 + 500 + 400 + 800 + 1087 + 215.46 = 5186.46・1.03 = 5342.054 Armor: 74 + (100 + 70 + 100 + 20.78)・1.10 = 319.858

Caitlyn

3 Quintessences of Attack Speed 9 Marks of Attack Damage 9 Seals of Armor 9 Glyphs of Magic Resist

Berserker’s Greaves Infinity Edge Phantom Dancer Bloodthirster Last Whisper Guardian Angel

CS does not matter

8.55 + 10 + 4 = 22.55 bonus attack damage (from runes and masteries, not including Warlord 2/3)

Attack Damage: 101 + (80 + 80 + 40 + 8.55)・1.035 = 316.849 Health: 1884 + 36 = 1920・1.03 = 1977.6 Magic Resist: 30 + 50 + 12.06 = 92.06 Armor Pentration: 41%

Magic Resistance: 1 - [100/(100+92.06)] = 47.933%

316.8491.5 = 475.274 base damage for headshot 316.8492.5 = 792.123 base damage for critical

Let’s get started.

Caitlyn attacks Sion

Sion's Effective Armor: 319.858・0.59 = 188.716 Damage Taken: 188.716・1.01-4 = 186.603 Percent Health: 3.493%

Thornmail Damage: 316.849・0.30 = 95.085 Lifesteal: 37.321 Damage Taken: 49.508 - 37.321 = 12.187 Percent Health: 0.616%

(All other attacks (crits, headshot) are proportional to a regular attack, making no difference ratio wise.)

So really, it's not that amazing. Yeah, any damage on an ADC is great, but the ADC can just attack someone else and heal for more that the damage taken.