After consecutively failing as a jungler, I've been playing support champions more often. I get 
Philosopher's Stone and 
Heart of Gold along with 
Sight Wards, 
Vision Wards and 
Boots of Speed. Then I upgrade to Tier 2 boots, buy a 
Kindlegem, 
Aegis of the Legion, and more wards. I've been doing it like this since dinosaurs roamed the earth, and I've never thought of changing this core build until recently.
Then while I was playing some matches, I've noticed that the supports of both teams tend to add 
Kage's Lucky Pick in their build. Some sell the item later in the game. Others build it into 
Morello's Evil Tome (coughcough
Lulucoughcough). I've seen the results of this item to either:
- rake up a load of gold late game
- completely hinder the support's item build
- have
Master Yi rage for accidentally buying it instad of a standard tower dunking build, replace all his items with an AP carry build, end up going 21:9:10 to carry the team, and laughing at the enemy for not having any non-ultimate hard CC while they fruitlessly try to bring him down during Meditate
So, from what I've seen buying Kage's Lucky Pick seems to have some risks. It can give more gold income, but with the gold you could buy quite a fair amount of wards, which gives you better buff control, map awareness, and it may prevent you into chasing a low-health 
Lee Sin only to get raped by the entire enemy team hiding in the tribush. In other words, EEN WUT SITUUATION WUD I ADD DIS ITEM INTO MA BUILDE?