Tanky on-hit Teemo?
So I've been playing for about a season and a half, and during that time I've seen two types of teemos played: AP/AS and Big AP shroom machine. However I have heard rumors floating around of another build path that apparently used to wreck games, that being tanky on-hit teemo. My understanding is this was boots, BotRK, Trinity Force, Omen, veil, Mallet. What caused this to stop being played, and is it still a viable build path?