Cool Card Design of the Day
6/6/2016 - The Kicker Problem is that players love to maximize value from their cards and will often not play a Kavu Titan on turn 2 even when they really should. Monstrosity is an excellent solution because it provides a mana sink for the late game but it doesn't ask players to restrain their card play. Flashback does much the same thing.
I started exploring an iteration of flashback that felt more like kicker, by offering a bonus when you flashback a spell the same turn you cast it, and I quickly found doing so explicitly was terribly ham-fisted (and lead to The Kicker Problem again). It felt much more natural to find effects that simply got better when you cast them twice in a single turn.