Just a note on the listings here, the Value column is the strength of the card where the first number is the top number, second is left, third is right, last is bottom.  Just about all of the cards can be obtained from those monsters or from facing other people in the Triple Triad game.  As for all of the rare card locations, go to the Extra Stuff page for more information on them.

Level 1 Cards
Name Value Element Card Mod
Geezard 1541 none 1 - 5 Screws
Funguar 5311 none 1 - 1 M-Stone Piece
Bite Bug 1533 none 1 - 1 M-Stone Piece
Red Bat 6211 none 1 - 1 Vampire Fang
Blobra 2531 none 4 - 1 Rune Armlet
Gayla 2414 Thunder 1 - 1 Mystery Fluid
Gesper 1154 none 1 - 1 Black Hole
Fastitocalon-F 3152 Earth 5 - 1 Water Crystal
Blood Soul 2116 none 1 - 1 Zombie Powder
Caterchipillar 4324 none 1 - 1 Spider Web
Cockatrice 2612 Thunder 1 - 1 Cockatrice Pinion
Level 2 Cards
Grat 7113 none 1 - 1 Magic Stone
Buel 6322 none 1 - 1 Magic Stone
Mesmerize 5433 none 1 - 1 Mesmerize Blade
Glacial Eye 6314 Ice 1 - 1 Arctic Wind
Belhelmel 3345 none 1 - 1 Saw Blade
Thrustaevis 5532 Wind 1 - 1 Shear Feather
Anacondaur 5513 Poison 1 - 1 Venom Fang
Creeps 5225 Thunder 1 - 1 Coral Fragment
Grendel 4245 Thunder 1 - 1 Dragon Fin
Jelleye 3721 none 1 - 1 Magic Stone
Grand Mantis 5325 none 1 - 1 Sharp Spike
Level 3 Cards
Forbidden 6263 none 1 - 1 Betrayal Sword
Armadodo 6631 Earth 1 - 1 Dino Bone
Tri-Face 3555 Poison 1 - 1 Curse Spike
Fastitocalon 7351 Earth 1 - 1 Water Crystal
Snow Lion 7315 Ice 1 - 1 North Wind
Ochu 5363 none 1 - 1 Ochu Tentacle
Sam08G 5462 Fire 1 - 1 Running Fire
Death Claw 4247 Fire 1 - 1 Sharp Spike
Cactuar 6326 none 1 - 1 Cactus Thorn
Tonberry 3464 none 1 - 1 Chef's Knife
Abyss Worm 7523 Earth 1 - 1 Windmill
Level 4 Cards
Turtapod 2736 none 5 - 1 Healing Mail
Vysage 6554 none 1 - 1 Wizard Stone
T-Rexaur 4762 none 2 - 1 Dino Bone
Bomb 2376 Fire 1 - 1 Bomb Fragment
Blitz 1764 Thunder 1 - 1 Dynamo Stone
Wendigo 7631 none 1 - 1 Steel Orb
Torama 7444 none 5 - 1 Life Ring
Imp 3673 none 1 - 1 Wizard Stone
Blue Dragon 6327 Poison 4 - 1 Fury Fragment
Adamantoise 4655 Earth 3 - 1 Turtle Shell
Hexadragon 7354 Fire 1 - 1 Sharp Spike
Level 5 Cards
Iron Giant 6556 none 3 - 1 Star Fragment
Behemoth 3765 none 10 - 1 Barrier
Chimera 7365 Water 10 - 1 Regen Ring
PuPu 31A2 none 1 - 1 Hungry Pot
Elastoid 6726 none 1 - 1 Steel Pipe
GIM47N 5457 none 1 - 10 Fast Ammo
Malboro 7274 Poison 4 - 1 Malboro Tentacle
Ruby Dragon 7427 Fire 10 - 1 Inferno Fang
Elnoyle 5637 none 10 - 1 Energy Crystal
Tonberry King 4467 none 1 - 1 Chef's Knife
Biggs & Wedge 6762 none 1 - 1 X-Potion
Level 6 Cards
Fujin & Raijin 2488 none 1 - 1 X-Potion
Elvoret 7483 Wind 1 - 10 Death Stones
X-ATM092 4387 none 2 - 1 Turtle Shell
Granaldo 7528 none 1 - 1 G-Returner
Gerogero 1388 Poison 10 - 1 Circlet
Iguion 8228 none 1 - 1 Cockatrice Pinion
Abadon 6584 none 1 - 30 Dark Ammo
Trauma 4685 none 1 - 30 Demolition Ammo
Oilboyle 1884 none 1 - 30 Fire Ammo
Shumi Tribe 6458 none 5 - 1 Gambler Spirit
Krysta 7158 none 1 - 10 Holy Stones
Level 7 Cards
Propagator 8844 none 1 - 1 G-Mega-Potion
Jumbo Cactuar 8484 none 1 - 1 Cactus Thorn
Tri-Point 8852 Thunder 40 - 1 Jet Engine
Gargantua 5866 none 10 - 1 Strength Love
Mobile Type 8 8367 none 1 - 10 Shell Stones
Sphinxara 8835 none 1 - 1 G-Mega-Potion
Tiamat 8485 none 1 - 10 Flare Stones
BGH251F2 5578 none 1 - 10 Protect Stones
Red Giant 6784 none 1 - 5 Meteor Stones
Catoblepas 1787 none 1 - 1 Rename Card
Ultima Weapon 7872 none 1 - 1 Ultima Stone
Level 8 Cards
Chubby Chocobo 4948 none 1 - 100 LuvLuvGs
Angelo 9367 none 1 - 100 Elixirs
Gilgamesh 3679 none 1 - 10 Holy Wars
MiniMog 9239 none 1 - 100 Pet Houses
Chicobo 9448 none 1 - 100 Gysahl Greens
Quetzalcoatal 2499 Thunder 1 - 100 Dynamo Stones
Shiva 6974 Ice 1 - 100 North Winds
Ifrit 9862 Fire 1 - 3 Elem Atks
Siren 8296 none 1 - 3 Status Atks
Sacred 5919 Earth 1 - 100 Dino Bones
Minotaur 9952 Earth 1 - 10 Adamantines
Level 9 Cards
Carbuncle 844A none 1 - 3 Glow Curtains
Diablos 53A8 none 1 - 100 Black Holes
Leviathan 77A1 Water 1 - 3 Doc's Codes
Odin 85A3 none 1 - 100 Dead Spirits
Pandemonium A717 Wind 1 - 100 Windmills
Cerberus 7A46 none 1 - 100 Lightweights
Alexander 92A4 Holy 1 - 3 Moon Curtains
Phoenix 7A27 Fire 1 - 3 Phoenix Spirits
Bahamut A682 none 1 - 100 Megalixirs
Doomtrain 3A1A Poison 1 - 3 Status Guards
Eden 4A49 none 1 - 3 Monk's Codes
Level 10 Cards
Ward A872 none 1 - 3 Gaea's Rings
Kiros 6A76 none 1 - 3 Accelerators
Laguna 59A3 none 1 - 100 Heroes
Selphie A486 none 1 - 3 Elem Guards
Quistis 926A none 1 - 3 Samantha Souls
Irvine 2A69 none 1 - 3 Rocket Engines
Zell 865A none 1 - 3 Hyper Wrists
Rinoa 4AA2 none 1 - 3 Magic Armlets
Edea A3A3 none 1 - 3 Royal Crowns
Seifer 649A none 1 - 3 Diamond Armors
Squall A946 none 1 - 3 Three Stars