Fun build that really snowballs. Your goal is to hit 20 stacks with all 3 items and wreck face. You will find that its a lot easier than you think, thanks to Eve's new ult shielding you and speed boost from dark frenzy to get away.

Pros:
Cheap items let you complete your build early.
Extremely fast movement speed.
Tanky, can initiate and take a beating before flying out of the battle.
Balanced ap / ad dps makes it hard to resist and deals more consistent damage over time unlike the pure ap builds.

Cons:
People think you are trolling.
Takes over adc job.

Rush snowball items. I've hit item complete often at level 15 and feel pretty invincible. Leviathan and Eve's new ult gives you tons of tanking power. With speed boosts from trinity force, dark frenzy and a 20 stack sword of occult you will be flying across the map killing everything along the way.

Stax are obtainable in any lane, including jungle (replace ignite with smite), but go mid for best results. Use hate spike to push the lane to the enemy tower and gank frequently. Achieving stacks as a semi-support role in bottom lane is surprisingly effective as well.

Don't afraid to initiate in team fights if the positioning is correct. Initiate with an ult over their carry and immediately rip them to shreds. If you drop low on health flash and dark frenzy away and let your team mates clean up. Often you will be able to stay in the fight the entire time thanks to the health from leviathan and life steal from Hextech.