The best guild is whichever one the guy talking to you is part of.
Also, please don't beg. It isn't becoming, it ruins the satisfaction of getting somewhere yourself, and most importantly, it generally doesn't pay off.
My brother started playing Runequest (or whatever that thing is called) and was instantly greeted by a ragged beggar. Two hours later my brother had finished a few quests and smithed himself a full set of iron armor. The beggar, still dressed in the rags he started in, dashed up to him to whine that surely somebody who's clearly been playing for days can spare something for a newbie.
In other words, just play some matches, enter some tournaments and get the cards yourself. You should know how to do that; you're already Master rank.
Ramz is right i use montana elo which when up against piranas rescue nightmare its quite easy 2 think oh crap ive lost , but its not the case ive beaton loads of soa & sob cards its the way you think and play not the cards , i really dislike kolos cause ppl use him as a 1hit ko they just dont think , oh i have kolos lets save up all my pills 4 him
the best guild is by far " the drifters " lol but its your decision