Edit: i said bc and tf are tank VIABLE items, not tank items. Tanks can build them.
There are 5 upgradable items that tanks can build: 
Mages have one: 
(SR) /
(TT)
Supports have two: 
Assassins have one half: (this is only viable on a few assassins)
ADCs have one and a half: 
(this is only viable on a few adcs)
Can i get an explanation for this?
ModWulf Helhammer6 votesI would say it's more of true tanks have 2, fighters have 2, and supports/tanks have another one. Neither triforce or BC are really tank items
koshkyra1 votesThats true. They arent tank items.
They are still tank-viable items though.
I love your name.
Slythion3 votesCleaver isn't a tank item, Tri-force isn't a tank item, and locket was designed to be a support item (but we know how that itemization is being handled atm)
it's more like :
2.5 tank items
2 Diver Items
.5 Assassin Items
2 support items
1.5 Adc Items
It really not as biased when you really look into it for an accurate assessment
LeBlanc Rose1 votesBlack cleaver and TriForce are rush items for certain Tank and Juggernaut champions who then go full tank. There.
Slythion1 votesCan you give me a few examples of tanks (as in, the class of champion) who rush Cleaver and/or Triforce.
Also:
If you're going to differentiate Divers and Assassins you need to also separate Tanks and Juggernauts imo
LeBlanc Rose1 votes
& 
were the ones I was thinking of.
Slythion2 votesneither of those are of the tank-class though, they're both juggernauts
Escheton2 votesThey are late game items. When it comes to the point that you have gold to upgrade a 6th item things have happened. You may need to shoehorn in an item that might not otherwise be optimal. But the stats are awesome and better than anything else in slot. The selection is both varied and fitting a hermetic melee Tank-Bruiser smith.
Doctor Jarvis2 votesI just hate that mages have to build Deathcap to make use of Ornn's passive. Like, no one was building it in the first place, and now it's like "build it or make your Ornn look stupid".
Ok sure but why2 votesThe fact that mages don't need Deathcap to do massive amounts of damage in the first place is one of the problems with league rn.
PopcornBunni2 votes[{quoted}](name=Doctor Jarvis,realm=NA,application-id=3ErqAdtq,discussion-id=ZcU3xpeM,comment-id=0002,timestamp=2017-08-24T05:07:52.814+0000)
I just hate that mages have to build Deathcap to make use of Ornn's passive. Like, no one was building it in the first place, and now it's like "build it or make your Ornn look stupid".
is more than viable on any mage with low AP scalings (50% and lower) as a more gold efficient way of increasing damage output, and many of those mages build defensive alongside magic pen.
Stars Shaper1 votes is built on some mages too.