Originally Posted by vortical42
I would be curious to see how early you are actually able to complete the TF. I agree, that extra damage is really strong in the early game when most players are under 1000 health. The problem is, the sheen proc doesn't scale, so with every passing level it becomes less relevant. I crunched the numbers and for rengar, the sheen proc will add 159 bonus damage to your next basic attack at level 18. In that same period of time, Vayne will have gained 1411 total health without spending a single gold. If you want to look at it in terms of per level gains, Rengar gains +3 base AD per level. That means that the damage from TF proc is increasing by a mere 4.5 per level. Compare that to Vayne who gains an additional 83 health per level and TF doesn't look nearly as appealing.
Lol, you are completely ignoring the damage items you would buy >.< When you have, lets say 200 AD and you add that by 125% you would end up having an attack that does 250 BONUS damage, and on top of that, a fully charged Q makes your next attack do double damage, so that would be 200+400+250 damage right there. (That's ignoring armor and stuff)
Idk bout you, but I think 850 damage is pretty nice for an opening attack.
Edit: That would be 200+200+250 lol, still 650 damage is pretty good too :P That's just one basic attack used with an ablity that can combo into a second attack to do slightly less damage then that.