Q: Luk and drop rate

[shuning]

i remember when i 1st started RO... there were many Chinese guides saying that u need to increase luk... it improves the chance of getting cards.... but my friend told me its BS....

Its been many years but recently ive read some guides on RMS talking about champion builds... they are saying that we need luk to improve the chance of getting cards.... i tried to do a google search but not much results were given.. except for this.....

http://www.answerbag.com/q_view/17149

so yea.... just wondering for any one whole knows the current formula here.... DOES LUK REALLY INCREASE YOUR RATE OF GETTING CARDS?