Hey, I run a Gravity Bind deck and there is one really good combo that stands out in it.  It requires 4 cards.
 
Crimson Ninja IOC-006
FLIP: Select 1 Trap Card on the field and destroy it.  If the selected card is Set, pick up and see the card.  If it is a Trap Card, it is destroyed.  If it is a Spell Card, return it to its original position.
 
Heart of Clear Water LOD-077
If the equipped monster's ATK is 1300 or higher, this card is automatically destroyed.  The monster equipped with this card is not destroyed in battle or by the effect of a card that specifically designates a target.  Battle Damage is calculated normally.
 
Creature Swap LOD-081
Both players select 1 monster on their respective fields and switch control of them to each other.  The battle positions of these cards cannot change during the turn this card is activated.
 
Ojama Trio DCR-047
Special Summon 3 "Ojama Tokens" (Beast-Type/LIGHT/2 Stars/ATK 0/DEF 1000) in Defense Position on your opponent's side of the field.  The tokens cannot be used as a Tribute for a Tribute Summon.  When an "Ojama Token" is destroyed, inflict 300 points of damage to the controller's Life Points.
 
Start by flipping Crimson Ninja, most likely getting rid of your opponent's Trap.  Then equip it with Heart of Clear Water so it won't get destroyed.  Then use Creature Swap to give it to your opponent, hopefully getting a big monster in return.  Proceed to attack the Ninja and do big damage.  Then, activate Ojama Trio to take up space on your opponent's side of the field.  Also, you can destroy the tokens to do more damage.  If you can get a Spear Dragon with Creature Swap, that's really good.  You can use Spear to attack the Ninja, and I think that because of Swap, Spear won't go to DEF mode.  Then, if they put Ninja in DEF mode, you can still damage them easily.  It will also do big damage to the tokens.
 
Like it?  Hate it?  Want to duel me?  E-Mail me at YugiohChampMLoyd@aol.com