>>33753687A theme deck for Trainer Challenges and Theme VS/Events. If you already have a decent theme deck for that, then you use them to buy Pika Packs for flipping. Yes, those avatar box items. You can trade them for cheap rares that you can then sell for a pack (sometimes 2+ for a pack depending on the rare) and start building up some trading material, which you can then turn into a deck of your choice
>>33753670>31 BUS>10 SHLYou might be able to get one Lele for all of the BUS packs or maybe for the 10 SHL packs, but most of the rest you're better off trying to buy low-end EX/GX cards with that you can then sell for GRI packs.
>>33751063You could also benefit from this advice. The GX cards can all fetch at least a pack, but Rainbow Marshadow is your best card in there and it's not even close to the value of Lele or Zoroark. Those rares/reverse holos might as well be worthless except for Ninetales, Guzma, and Kiawe. Wicke and Wally are worth maybe a couple packs each. If you really want those cards you're going to have to sell off as much of that as you can for packs and get the them the hard way: build up the rest of their value in packs through flipping or events.
