User blog comment:LivesByProxy/Vision: Sight, Stealth, Detection, & Denial in LoL/@comment-24648781-20151019170429

I think if you talk about champions and vision-altering abilities, you have to include Twisted Fate, as his Destiny does give your entire team vision of every enemy on the map and Rengar too, as his ultimate also reveals enemies close by that you would otherwise not have detected.

Also, I kind of disagree on Rek´Sai being the first champion with a detection ability. Warwick does count there, for me. His Blood Scent passive was the first detection ability, even though it is much more unrelyable than Rek´s Tremor Sense. But, still you always knew when an enemy below 50% health was close by with WW, seeing as his passive would then proc.