There is no such list, you have to make your own required list for you or you can ask anyone regarding for which class you need combo.
From following list you can make combo:
Angeling = armor, Holy property
Baphomet = weapon, splash damage (doesn't work with +% damage cards), Hit -10
Bloody Knight = headgear, +3 DEF, +20 ATK
Dark Illusion = headgear, HP -10%, SP -10%, cast time -10%; when Dark Lord Card is equipped too, HP +20%, SP +20%, cast time -10%
Drake = weapon, perfect damage and Lvl 5 Waterball
Eddga = shoes, +12% HP and always Endure
Evil Snake Lord = headgear, +3 INT, immune to Chaos/Stone Curse
Gryphon = headgear, +20 Crit, For every 11 Base Str the critical bonus is reduced by 2, and you receive an additional 2 LUK.
Lord of Death = robe, +10 VIT, +3 DEF
Orc Lord = armor, reflect 30% melee damage
Orc Hero = headgear, +3 VIT, immune to stun
Pharaoh = headgear, -30% SP consumption
Stormy Knight = headgear, +20 flee
Tao Gunka = armor, HP +100%, DEF -50, MDEF -50
Greater MVP/miniboss card Berzebub = accessory, cast time -30%
Dark Lord = shoes, +50% HP
Deviling = robe, -50% damage from neutral element, +50% damage from other elements
Doppelganger = weapon, +33% ASPD
Dracula = weapon, 10% chance to gain SP equal to 5% your damage, +15% bonus exp from all races except Angel and Dragon (Does not work on Bosses), -7 DEX
Garm = armor, +10 DEF
Ghostring = armor, Ghost property (does not work against monsters), -25% HP regen
Golden Thiefbug = shield, immune to magic, +100% SP consumption
Maya = shield, +30 MDEF, Enable Use of Level 4 Guard
Mistress = headgear, free gemstones, +25% SP consumption
Moonlight = shoes, walking speed up, +5 DEX
Mysteltainn = shoes, +20 flee, +30 ATK
Osiris = accessory, full HP/SP when resurrected, Enable Use of Level 5 AGI UP, Enable Use of Level 2 Warp Portal (Warp Portal is Disabled for Ninja Class, Rogue Class, Stalker Class and Taekwon Classes)
Phreeoni = weapon, +100 hit
Samurai = weapon, +65 ATK
Toad = shield, 40% reduced Demi-Human damage
Turtle General = weapon, +20% damage.
