Twisted Fate's Pick a Card and Latency
I had one of those infamous games just now where you start out at a decent latency and end up eating 300-500ms for most of the game and yet have a delay of 1.5-2s on actions. Today was the first time I did so as Twisted Fate. I would choose Yellow Card and get Blue Card or Red Card. Or I'd choose Blue Card and get Red Card or Yellow Card. As you might imagine, this causes considerable headaches for Twisted Fate who relies on this for mana sustain and CC. There was at least 3 instances in the early game where an ally was killed or an enemy narrowly escaped because I pulled a Blue Card instead of a Yellow Card, and a few more where I did not have any mana left because I had gotten Red or Yellow Cards while attacking minions.
My computer is having no hiccups and never dropped under 60fps, which leads me to believe that Pick a Card's determination (for lack of a better phrase) is server side. When dealing with high latency, this severely punishes the player and should be changed.