Thread:ProtonZero/@comment-79.167.79.101-20121027073026/@comment-4087140-20121027090631

Thank you for asking! I'll explain as best I can.


 * 1)  makes your champion ignore 40% of the target's armor; this benefits basic attacks and any abilities which deal physical damage (which includes  Q, E, and R).
 * 2) Both  and  are percentages, so it actually doesn't matter which one is applied first (unless you add in flat reduction or penetration, but that's more complex).  So in this case, 10070%60%42 armor (as far as  is concerned; since armor penetration doesn't benefit allies, they still deal damage as if the enemy had 10070% 70 armor).
 * 3) This is more personal opinion.  Since percentage penetration/reduction is more useful as opponents get more armor, I would get  later.  Even though  scales with health, the critical strike chance and armor benefit you immediately.
 * 4) Stacking health is useful against  simply because nothing can reduce the damage of .  It is also nice because he does mixed damage, but in my opinion it's better to build some armor and some MR against that anyway.
 * 5) There is!  1 armor1% health.  If you have 1500 health, then each point of armor is worth 15 "health" against physical damage.  If you have 3000 health, then each point of armor is worth 30 "health" against physical damage.
 * 6) Magic damage is very useful against enemies who stack armor, but not all champions are designed to deal magic damage.  For champions like  who can only really deal physical damage, I personally recommend taking a more tanky route: if you can't deal damage without being quickly killed, then make yourself a tough distraction for them while your magic damage allies take them out.

I hope this helps, and if anything needs more explanation, don't hesitate to ask!