Easy Rare Cards:

to get rare cards easily just go duel tristan after you beat the neo ghouls and ante a good card like b-eyes white dragon and sometimes when you win (because his most powerful monster has an ATK of 350) he will give you a torrental tribute, pot of greed, invisble wire, megamorph.

NOTE: if you keep dueling tristan he will start to give you cards like last day of witch, warrior elimination, ect... to stop that dule people like espa roba or duke devilen that will make tristan fork over some rare cards again

good luck
your friend