One of the most powerful effects in the game, on a lower CD then some ults.
costs litterally nothing. Doesn't cost gold, no Mana, no health, doesn't even cost fucking energy.
You don't even have to remember to buy it anymore, if you walk out of Base without it, it magically appears in you inventory now.
So please.
just use it.
http://i.kinja-img.com/gawker-media/image/upload/s--5dQlJbC7--/tmay7kkhvoo1mouwcneh.jpg
Any role I play I get blue trinket at level 9 and ward all over our jungle, it gets the the point where as a mid laner I am out warding the support with just the blue trinket alone.
I have been away for a month and a half. I noticed things have changed but am not yet sure it the upgrade features of it are still relevant. I always hated when people wouldn't upgrade it. Just do it! Then leave lots of them all over the map.
is broken, provides so much vision from a super safe range, and until is found not like you have a timer or something, i think riot has to increase the CD that to make it balanced...
Oh. I thought it was 
auto attack. right click and and collect penta kill.
