Tri-Force

I dont agree on garen. Garen makes a lot of use out of most of the stats on trinity force; if hes going to get a spellblade item, it sohuld be trinity.

The others i can agree with situationally. theres better items for them dpeending on the situation.

Tends to auto alot and slings spells fairly often. I don't see why not, but there are definitely better items. Wouldn't know, to be honest, but she DOES have AD and AP ratios. It wouldn't be the worst item on her, but not the best either. Adds even more burst to his Assassiny burstiness, and gives him some sticking power. Maybe not optimal, but why not? Okay, maybe not Aatrox. Then again with hefty AD scaling and a total 160% AP ratio in his kit, it wouldn't be the worst. More likely than Rek'Sai maybe. Aside from the wasted AP and mana, this isn't a terrible item for Garen. Then again, it's wasting the AP and mana stat, so you're probably better off with something else. Good for front end burst if completed early enough. The AP is a waste, but adding to the on-hit damage of Crippling Strike as well as giving him sticking power is pretty nice. And the mana is good on him.

TL;DR: I wouldn't say "never" in most cases, but for almost all of them there are probably better items.

Gnar does great with tri force, in mini form he can proc sheen with his q really often. You can build just a tri force and go full tank while still outputting a ton of damage. Also he uses every Stat it gives but mana

don't build it on doesn't auto enough to proc phage, and zeal doesn't cast enough abilities to activate sheen doesn't auto enough to proc phage and zeal it's great on AP scales on W, sheen on Q-auto combo, phage is OP AP scales on ranged Q which is often enough to last hit almost escaped enemies. fantastic MS with phage and zeal, sheen on Q sheen for AD scaling additional burst, extra MS, extra AS, extra AD, extra AP all great on every ability (General rule of thumb: anyone who can chain abilities and autos benefit from trinity AND doesn't benefit from better items e.g. with and with ) I'm guessing OP doesn't like trinity on manaless champ because of that 200 mana?