Depending on the champion, full ArPen runes can be useful if you can get away with them. They may not be optimized for the fastest possible jungle, but they're fantastic when fighting champions.
Some champions need other runes though. I wouldn't run full arpen on someone reliant on AS or AD.
Some champions need other runes though. I wouldn't run full arpen on someone reliant on AS or AD.

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I like 24 armor pen for red and blue buff. The 30 armor for wraith's doesn't really make a difference in how many hits it takes to kill them in my experience.
Well to clarify 24 armor pen is what I'd do on junglers that need armor pen. Attack speed is solid for jungle speeds also.
That's 24 with
Sunder
Well to clarify 24 armor pen is what I'd do on junglers that need armor pen. Attack speed is solid for jungle speeds also.
That's 24 with

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i dont want to lie (am to lazy to look it up tho) but I could swear that I've read in one of the Pro-Builds that 12 armor penetration is enough for jungling. Now I use 15, full reds.
What would you say if I replaced like some of them with atack speed runes? 12 ArmPen and some atack speed or maybe hp...
I looked it up and buffs have 24 armor, wraits have 30/35 armor. sooo... will 12 arm pen really be enough??