On the other hand, I can help you out with some cheats... So, here we go...
Free potions:
You can get free potions in Timber Town. Get Rinoa in your party and go to the bridge where you saw the guards. Keep returning until a man appears. Talk to him, then talk to him a second time, and you'll get a free potion. Leave the screen and return until he appears again, and just keep repeating it.
Rare Card Locations:
PuPu
Look for UFO's passing by during a battle in the following places (you've got to have Diablos' 'Enc-None'):
1. Outside Winhill Town.
2. Mandy Beach, northeast of Timber.
3. Heath Peninsula, east of Trabia Garden.
4. Kashkabald Desert.
After sighting all four, fly the Ragnarok to the rocky cliffs above the Chocobo Shrine. Encounter a UFO and defeat it. Then, head to the crater where Blalamb Crater used to be. You'll encounter a PuPu. Feed him five elixers and you will be rewarded. It's only a level 5 card, but it is definitly the hardest card to find.
Fat Chocobo: man in front of Balamb Library (Queen of Cards Quest).
Angelo: Watts, on Forest Owl's Train.
Gilgamesh: CC King.
Minimog: boy running laps around Balamb Garden.
Chicobo: summon four large Chocobo at all six forests, then proceed to the Chocobo Shrine.
Quezocotl: F.H. Mayor Dobe.
Shiva: trade 'Girl Next Door' to Zone.
Ifrit: defeat Ifrit.
Siren: Card Master on second floor of the Dollet Pub.
Secret and Minotaur: defeat Brothers.
Carbuncle: CC Heart.
Diablos: defeat Diablos.
Leviathan: CC Joker.
Odin: defeat Odin.
Pandemona: Zell's neighbours.
Cerebrus: defeat Cerebrus.
Alexander: Piet in Lunarside Base.
Phoenix: Esthar presidential assistant (Queen of Cards Quest).
Bahamut: defeat Bahamut.
Doomtrain: Timber Pub bartender (Queen of Cards Quest).
Eden: defeat Ultima Weapon.
Ward: Dr. Odine in Esthar.
Kiros: man in black suit in Deling shopping area (Queen of Cards Quest).
Laguna: Ellone in Lunarside Base.
Selphie: Selphie's best friend in Trabia Garden.
Quistis: Trepe Fan Club in Balamb Garden.
Irvine: Flo (Queen of Cards Quest).
Zell: Zell's mom in Balamb Town.
Rinoa: lose the Ifrit Card to Gen. Caraway in Deling City. Win it back from Marlene in F.H.
Edea: Edea at her house.
Seifer: Cid at Edea's house.
Squall: Laguna at Esthar.
Tip!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
If you want to play this card game online, go to the link below!!! It will be played on The Final Fantasy Gods Oblivion Network (www.ffgon.com).