People complaining about Zoe.
But who should be complained about and nerfed is 
Primordial Burst TARGET RANGE: 650 COST: 100 mana COOLDOWN: 120 / 100 / 80
Active: Veigar blasts the target enemy champion with primordial energy, dealing them magic damage, increased by 0% - 100% (based on target's missing health). 175 / 250 / 325 (+ 75% AP)
^No champion that infinity scales/gets free stats and has super hard hitting abilities with Q and E and a massive AoE 2sec stun should have this. Especially not on a point and click ability.
Honestly the most overloaded and bullshit ability in the game, period.
but I guess it's easier to just say "oh gee AP stacking" than actually doing the math.