Yep, the new meta is 9/0/21 cause of cd's on summoner spells(most of ppl now going with teleport), the cookie and the ward for early invade w/o spending a 3 minutes ward for just a 10 seconds invade.
Sucks anyway, I still prefer 21/0/9 on AP Carry like TF. Cards btw are Yellow>Blue>Red if that is what you mean to ask, they appear in random when you activate the skill. And no, it's not worth to play with cd's just for the ult. You will have ult again anyway for the next gank, since you gonna stay at the lane about 2 mins, shop and go back again.