Zilean. He's such royal piss off, that dude makes me pull my hair out even at loading screen. In the lane bombing you like a boss till you die/rec, gank? Well let's overclock my ass and away we go. When the bombs start to lose punch (depends how you build, AP or support), you are clocking your ult, imo one of the very best ults.
Zilean + Tryndamere in team, you might as well not bother past 30min mark.
On the other hand, Evelynn, you might get few kills early on, but then ppl get wards/oracles and you are done. Even if they don't you won't do anything due to your squishiness.