What is the most efficient combination of AD runes and Critical Hit damage runes?

There isn't.

for all champions except yasuo its the following: 100% ad 0% crit

For ADC the most efficent starting runes are AD reds AS quints.

If you want a theoretical argument 10% crit chance for a late game, double PD with IE is 100%. The rest you would want AS.

If you are talking yasou it is completely different

I was talking for yasuo, tryndamere, and shaco. Whats an efficient ad/crit damage ratio. What would return the greatest yield.

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Are you referring to the runes that increase crit damage? Because you shouldn't be using those

Well I want to anyways. Ratio plox?

Reasonably thought out answers only please.

Well I prefer AD marks/quints, armor seals and MR glyphs. It helps me cs, and the crit chance is highly unreliable in the early stages when runes really shine.

I've tried crit marks/quints, armor seals and MR glyphs, but in a duel, someone with AD runes did more damage than me. Even with crits, the bonus damage was based off a damage that was so low to begin with it didn't add up as fast.

In the end, 1 is infinitely greater than 0. So I would vote 1 crit mark and the rest AD marks, then AD or attack speed quints depending on your csing skill.

Oooh crit DAMAGE runes. No idea. :P

I still seek the answer! :3

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My basic ADC page. 8 AD Marks 1 Crit mark 9 armor seals. 9 mr glyphs. 2 ad quints 1 as quint

The question is, what is the best combination of ONLY AD and Crit Damage % runes?

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Your crit damage runes are useless without crit chance so unless your Tryndamere or 1st buy brawlers gloves then any crit damage runes you have are 0% efficient @ lvl 1.

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So, someone who has intricate knowledge of rune ratios want to answer? The kind of people who find out when dps is greater achieved by adding AS runes when their base ad increase per level is x and how to achieve a base damage increase of .153 over .121 over certain situations? People who can actually put in a reasonably well thought out response to the question based on the criteria made without just saying "crit damage % runes suck dont use them" ?