Below is a table listing all the opponents, with their name and difficulties.
Their difficulty is their starting health and will increase by one every time you beat that opponent.
To add a trading card in your deck you need to click it in your inventory and follow the instructions.
You can buy trading cards or win them from all over the site, such places as Rapunzel, Smuggler, Trading Card shop (Undying Woods), Celebrations and as Loyalty prizes.

Trading Card	Name	Difficulty
	Abolous	101
	Acne	45
	Agent	174
	Apollo	516
	Azul Swarm	43
	Bad Chocolate	54
	Bailiff	1
	Betsoni	95
	Bigne	96
	Bomb	305
	Boo	216
	Cake	100
	Can	57
	Candy Floss	84
	Cat Burglar	183
	Caveman	91
	Cheddar	79
	Circus Clown	20
	City Accountant	30
	City Banker	130
	City Hobo	15
	City Mayor	154
	City Realtor	40
	Clown	65
	Computer Geek	285
	Cowboy	210
	Cracked	1
	Crinkal	45
	Daemon	550
	Dash	197
	Dark Fairy	710
	Dark Knight	100
	Devil	750
	Don Pefuto	131
	Drab Army	28
	Drake	65
	Easter Bunny	53
	Elder	276
	Eleka Guard	41
	Eleka Minions	45
	Elger	145
	Excavator	50
	Explorer	75
	Explosive	650
	Evil Tree	72
	Felicia	65
	Flamed	170
	Flitter	15
	Frankie	360
	Fungus	600
	Gargoyle	240
	Gavula	183
	Goblar	200
	Grinch	350
	Gross	140
	Hades	400
	Hasani	50
	Hero	140
	Hithe	51
	Hot Dog	300
	Housse	34
	Hungry Bolimo	112
	Ice Gnome	162
	Inflate	250
	Insomniac	520
	Iolan	118
	Jet	71
	Kevadra	11
	King Baspinar	150
	Kleptome	32
	Knutt Knight	500
	Krick	48
	Leprechaun	35
	Lightning	235
	Light Warrior	101
	Linuw	27
	Lotus	127
	Lxi	5
	Magic	345
	Meagre	80
	Mommi	24
	Monsoon	600
	Mount	155
	Mozo	75
	Mrog	102
	Murderer	300
	Muscles	23
	Muskit	3
	Naunet	311
	Newth Night	25
	Nightmare	450
	Nille	13
	Nocto	48
	Nutcracker	50
	Obese Fairy	300
	Ogul	105
	Oke	250
	Operative	250
	Perchuka	151
	Personal Trainer	999
	Pessen	123
	Phospho	60
	Plutonium	150
	Poseidon	138
	Punk Xoi	102
	Pyramid	450
	Pyramid Twins	700
	Qikre	30
	Queen Eleka	200
	Raa	250
	RIP	400
	Rapid Fasoro	11
	Rapunzel	650
	Reisand	87
	Rubhd	20
	Runty	35
	Rusty	3
	Sandman	100
	Santa	17
	Santa Claws	33
	Shadow	325
	Sniffer	114
	Snot Newth	6
	Snowfight	68
	Snowball	29
	Snowman Twin	7
	Sorcerer	456
	Squit	173
	Sultan	400
	Sumo Feliz	10
	Sumo Sally	500
	Swondor	3
	Test Tube	15
	Thirugon	51
	Thunder	145
	Tichu	125
	Toothache	155
	Tresure	187
	Tuin	24
	Twigee	168
	Twree	133
	Uayl	5
	Undying	900
	Venus	68
	Vibue	500
	Villian	400
	Wee	1
	Wizadrip	11
	Wugor	186
	Xor	110
	Yaoe	75
	Yeti	200
	Zard	8
	Zeew	40
	Zeus	450