I don't know where it came from but like halfway through this week Yasuo's gotten more popular and every other time I see him Trinity Force is his first item. The enemy has always gotten fed with this; the ones on my team, not so much.
Is there a reason that it's becoming popular on him? As someone who might want to play him, is it something I want to do?
Koldheartedjsp2 votessurvivability is the main reason.
the HP+movement buff off phage is really good on yasuo
With the sheen proc as well he also doesn't really lose out on that much damage by taking it over something else
dangopee2 votesNo no no you're all wrong. The reason everyone is buying this on him now is for the extra mana it provides.
Rustling Bush1 votesprovides crit - check enpowered auto - check
it could be that trinity outputs more damage then infinity edge or its more reliable. idk read a yasuo mobafire guide.
Big Lincoln1 votesI figured it was because he uses most of the stats, but up until now I always assumed he like having both a lot of crit/AS and a lot of AD more than what triforce offered him
Catastrop1 votesMost likely someone did it, it worked and now sheep are following. Kappa. But in all seriousness, it's good item overall for any AD caster. It gives practically everything you could ever want especially for someone like Yasuo, who's going to have a field day with those Sheen procs.
HEXXEN9x1 votesI can see it procking off his practically free dash!
7ha7guy7771 votesHis Q can apply on-hit effects so there's some synergy with sheen. Other than that, i'm not really sure. Free week yasuos will be free week yasuos
Xx420n0sc0p3sxX1 votesIt was chosen in LCS, and for a good reason.
Tri+shiv+ie gets exactly 1oo% crits, the stats are great, phage passive ms is almost always up in a fight, sheen procs very often.
MegaManYYZ1 votespros/high elo players have started their 
after 1st item 
Hayaishi21 votes1k crit tornados too strong
Jbels1 votesIt provides alot of stickyness to targets which helps when you're running and gunning them down with Autos and Q's, it also makes you slightly beefier, gives you decent crit, and the sheen passive. It even gives you extra AP for damage on E (E max first IS a thing) There isn't anything on it Yasuo can't use besides the mana
3TWarrior1 votesbecause of his passive, it technically gives him 20% chance, but it's probably the ability to stick to a target that has given it viability...either way, the damage is only "decent"
IcyPepper1 votesCombined with IE and Shiv, it gives you 100% crit chance even, so no wasted stats. And lots of very nice passives and durability.