Devastating blow formula

[quote=Nny00000]I want to make sure I have this completely correct. So, Devastating blow is a physical attack (This part can crit), that has additional magic damage added (which is increased with AP), additional magic damage that is 8% of enemy's max health, stacks with trinity force, and turns the entire thing into magic damage. (Side note: Is trinity force/sheen affected by MR/Armor? Or is it a flat number? The description lets me believe it's a flat number) That would make the formula: (Magic Defense) DEF = 100/(100 + (MR * (1-MPEN%) - MPEN)) Where MR = Enemy's magic resistance MPEN% = Magic Penetration % MPEN = Flat Magic Penetration (Physical Attack) PHYS = AD * ((1+CRIT) * (1+CRITDMG)) Where AD = Attack Damage CRIT = Critical strike percent CRITDMG = Critical damage increase (Magical Attack) MAJ = 100 + (AP * 0.6) Where AP = Ability Power (HP Attack) dHP = eHP * 0.08 Where eHP = Enemy's Max HP (Trinity Attack) TRIN = bATK * 1.5 Where bATK = base attack For a total formula of DB = DEF * (PHYS+MAJ+dHP) + TRIN (Different if Trinity is affected by MR, but that's an easy fix if I'm wrong on that) So let us assume poppy hits an average enemy with no equipment/runes/masteries (2k health, 43.5 MR) and Poppy has no equipment/runes/masteries (0 AP, 117 AD, 0% crit, 0 MPEN). It would be DEF = 100/143.5 = .697 PHYS = 117 MAJ = 100 dHP = 2000 * .08 = 160 DB = .697 * (117+100+160) = 263 damage Now let's add a trinity force, sorc boots, and assumed the physical part crit attacked DEF = 100/123.5 = .810 PHYS = (117+30) * 2 = 294 MAJ = 100 + 30 * .6 = 118 dHP = 160 Trinity = 117 * 1.5 = 175 DB = .810 * (294+118+160) + 263 = 726 damage If it didn't crit, it would be 607 damage If you calculated the crit% as a flat damage increase to get an average DB damage, it would be 625 damage Is that correct? New to the game and have been reading the LOL's Wikia page and want to make sure 1) it's correct and 2) I put together everything correctly. Want to insure I buy the best items possible. Thanks.[/quote]

[quote=Temzilla]Trinity/Sheen/Lich Bane are all physical damage, regarded as spells (for the sake of spell vamp and spell shields), and can not critically hit. Or at least that's what i've observed...[/quote]

[quote=Nny00000][quote=Temzilla] Trinity/Sheen/Lich Bane are all physical damage, regarded as spells (for the sake of spell vamp and spell shields), and can not critically hit. Or at least that's what i've observed... [/quote] But is the damage from them affected by armor/MR? In the case of Devastating blow, all damage is converted to magic damage (According to Wikia, anyway). For instance, since poppy has 117 base attack, if it isn't affected by anything Sheen would be a strait +117 damage to DB. If it's converted to magic damage and then affected by MR, it would do only 82 points of damage (117 * .70 = 82, .70 being the rough reduction rate with 43.5 MR) If it isn't converted to magic damage and is affected by armor, it would add only 65.7 points of damage (Assuming 78 armor)[/quote]

[quote=Nethalas]Devastating Blow converts the whole attack to magic damage.[/quote]

[quote=Temzilla][[Devastating Blow]] does Auto Attack damage as Physical Damage, then does it's bonus magical damage+8% of the enemy's current health. So, the physical auto attack portion can crit, is affected by life steal, and is mitigated by armor. The 8% and the bonus magic damage can not crit, are both affected by spell vamp, and are mitigated by Magic Resist. The Trinity Force does Physical Damage, can not crit, is affected by spell vamp, and is mitigated by armor. If i'm getting everything. Edit: If Devastating Blow converts the entire thing to Magic Damage, it's tool tip is very vague about it, and that would would only change the "mitigated by" section of my post to Magic Resist in each case.[/quote]

[quote=NicknameMy]So, the old [[hextech gunblade]] was good for [[poppy]]?[/quote]

[quote=Nny00000][quote=Nethalas] Devastating Blow converts the whole attack to magic damage. [/quote] So then Sheen is affected by magic resistance for DB (And, for everything else, armor). So, if MR reduces by .7, all other damage does 100, and sheen does 100, it does 140 total damage (200*.7) rather than 170 (.7*100+100). So a quick definition of Sheen would be simply that it doubles you base damage. The tooltip of "Your next standard attack deals extra damage equal to 100% of your base attack damage" made me believe that it was a flat addition to the total account ("extra damage" rather than "physical damage"). Stupid vague tooltip Thanks for the clarification :)[/quote]

[quote=Nethalas]I'm pretty sure everything is converted into magic damage, I can't find any source that says otherwise. The AD part of the attack can crit, and it'll be converted into magic damage with the sheen proc. MR will then reduce all parts of the attack as you've suggested (incl. the AD and Sheen parts). I think the sheen tooltip is ok, it's more that Devastating Blow is a funny move. It might be the only attack buff that does magic damage. I think this also implies that all of DB will proc Spell Vamp and not lifesteal. I used to go Gunblade on Poppy.[/quote]

[quote=Searz][[Devastating Blow]] deals ONLY MAGICAL DAMAGE. Trinity/Sheen is damage added to your attack (which is physical normally, but magical for devastating blow). I think you've done a ton of unnecessary math.[/quote]

[quote=Nny00000][quote=Searz] [[Devastating Blow]] deals ONLY MAGICAL DAMAGE. Trinity/Sheen is damage added to your attack (which is physical normally, but magical for devastating blow). I think you've done a ton of unnecessary math. [/quote] What math is unnecessary? And none of this thread is about if trinity/sheen is magical or physical. It was a question (For that item) if it was affected by armor/magic resistance or if it was a flat rate.[/quote]