Thornmail should be added to 3s

Thornmail should be added to 3v3 to help vs adc comps.

How are you even having trouble with ADC comps in 3s?

Treelines places so much emphasis on constant fighting and early-game pressure it puts carries at a huge dissadvantage, what with being so weak early there team needs to carry them and so strong late they can return the favor.

Also: Thornmail is pretty broken in that mode. It's brutal as a first item, as building it before carries have the life-steal, MR, and armor pen necessary to deal with it can allow for near AFK kill potential. Add that to the huge damage spike Thornmail offers with it's 100 armor right-away relative to ADC builds at the time, and it's much more than a slightly-better sunfire cape vs. ADs.

Teams being 3 rather than 5 also makes it substantially harder to leave certain opponents to allies.

With the early-aggression in treelines, huge powerspike Thornmail offers relative to how carries build, and small teams forcing good damage vs. everyone, thornmail just lacks the counterplay necissary to really be a thing in 3s.

I agree with what 67chrome's comment here. But, for Hexakill there, I think it should be added.