Originally Posted by Sunaka
Go full crit damage.
ESPECIALLY ON SHACO / GANGPLANK.
Shacos decieve is an AUTO crit with BONUS damage. decieve can easily knock off half a squishies life with full crit damage runes.
They're also useful on ashe if you use her passive to just one shot / volley harass your enemies.
I cannot tell you how many kills ive racked up early game on ANY champion just from getting a lucky crit and nailing 150+ damage
They're expensive (Took me a looong time to build it up) but well worth it
Shaco, maybe. Ashe, doubtful.
I cannot emphasize enough how wholeheartedly I disagree with you when it comes to ANY OTHER CHAMPION
. Including Gangplank. If you absolutely must make each of your bursts do more damage, get Armor Penetration
When I was new to the game, I thought exactly what you did. "Yay, huge crits!" "They'll never expect it!" "I'll make them turn tail and flee with one big crit!" But you are sacrificing far too much
for just the random possibility of that happening.
-In marks for 20% crit damage, you're sacrificing 17.64 armor penetration, or 8% crit chance. The armor penetration alone
will make you do MORE damage than if you went crit damage.
-In seals for a mere 7% crit damage, you're sacrificing 6.75% dodge or 12 flat armor or 24 armor at max lvl, or 175 hp at max lvl.
-In glyphs for a mere 5% crit damage, you're sacrificing 5.85% flat CD reduction, or 13.4 magic resist, or 24.3 MR @ 18, or 100 flat mana, or 230 mana @ 18, or 27.5 AP @ 18.
-In quints for 13.4% crit damage, you're sacrificing 11.7 armor penetration or +100 hp from the start, or 5.58% crit chance.
In marks and quints, armor penetration seems strictly better. Remember how armor penetration works:
Damage = (Calculated damage)*(100/(100+armor-armor pen)), as long as your armor pen is less than their armor.
So if they have 20 armor, and you have 20 armor penetration and you would originally do 100 damage:
With 20% crit damage on a crit: 220*(100/120) = 183
With 20 armor pen on a crit: 200
Well look at that! 20 armor penetration is BETTER THAN 20% CRIT DAMAGE ON A CRIT. But, you say, people usually have more than 20 armor. Alright, fine. What if they have 50 armor:
220*(100/150) = 146.7
200*(100/130) = 153.8
But, you say, people have more than 50 armor. Alright, fine. What if they have 100 armor:
220*(100/200) = 110
200*(100/180) = 111.1
tl;dr: armor pen is WAY better than crit dmg