Welcome to the newest Gankplank build. This build was made after the patch that changed Gankplank's passive from cutting the healing to slowing the enemy with normal attacks.

This build was created to make GP a pretty good nuker that can chase enemies with his new ability and with a good item choice.

You get, 33% critical damage with Red Runes.
You get +14 armor to help you early game with Yellow Runes.
You get +14 magic resist to help you early game with Blue Runes

Using a full Offensive masteries build help you getting +10% critical damage, some armor penetration and a little bit of mana regeneration if you put some points in utility.

The main goal with Gankplank is farming early game to buy an Avarice blade that will provide you more gold and eventually critical chance that you will need to be successfull. You try to get brutalizer and not complete it too fast to keep getting money from Avarice blade. The next goal is to get a Phantom Dancer to get more critical chance, movement speed and some attack speed that will make help you harass and chase enemies. Finally, Infinity edge will close the Damage per second part of your build. You will be able to crit a lot, and be very strong.