The Insomniac
Dark
***
Fiend/Effect
ATK 300/DEF 200
This card cannot be destroyed as a result of battle. When a monster with "Dream" in it's card name is summoned, inflict 500 points of damage to your opponent's lifepoints. If this onster is targeted by the effect of another card, destroy this card.

Dream Witch #1
Dark
*****
Spellcaster/Effect
ATK 2000/DEF 100
When this card is summoned, inflict 700 points of damage to your opponent's lifepoints for each spell card on the field. If there are face-down cards, flip them face-up. The effects of cards flipped face up by this effect are not activated and they are returned to their original positions.

Dream Witch #2
Light
*****
Spellcaster/Effect
ATK 2000/DEF 100
When this card is summoned, increase your lifepoints by 500 for each monster on your side of the field.

Dream Witch #3
Dark
*****
Spellcaster/Effect
ATK 2000/DEF 100
When this card is summoned, destroy all trap cards on the field. If there are face-down cards, flip them face-up. The effects of cards flipped face up by this effect are not activated. Magic cards flipped face-up by this effect are returned to their original positions

Powerful Dream
Dark
****
Fiend/Effect
ATK 1500/ DEF 100
When this card battles with a monster whose attack is 2000 or more, it's attack is doubled.

Bewildering Dream
Dark
****
Fiend/Effect
ATK 1000/DEF 700
When this card is summoned, select one monster on your opponent's side of the field and equip it with this card as an equip card. Reduce the attack and defense of the equipped card by the atack and defense of this monster.

Secluded Dream
Dark
*******
Fiend/Effect
ATK 1900/DEF 2200
When this card is summoned, send all other cards on your side of the field to the graveyard. Declare on type of monster. Monsters of the delcared type cannot be summoned as long as this card remains face-up on the field.

Stolen Dream
Dark
***
Fiend/Effect
ATK 0/DEF 0
When this card is summoned, select one moster in your opponent's graveyard. The ATK and DEF of this card become the ATK and DEF of the selected card as long as it remains in the graveyard.

Stiffling Dream
Dark
*******
Fiend/Effect
ATK 2000/DEF 1200
When this card attacks, reduce the ATK of the opponent's monster by half.

Fleeting Dream
Light
***
Fairy/Effect
ATK 200/DEF 2000
FLIP: The current turn ends. The controller of this card takes 2000 points of damage.

The Dreamer
Dark
***
Spellcaster/Effect
ATK 700/DEF 500
Increase the ATK and DEF of all monsters with "Dream" in their card names by 500.

Waking Dream
Dark
****
Fiend/Effect
ATK 1000/DEF 1500
When this card is summoned flip all face-down monsters face up. Flip effects are not activated.

More to come....

A couple of these cards are a little overpowered and would be limited in a hurry. The Insomniac would be semi in a hurry because of his two effects. Dream Witch #1 and #3 are a bit confusing. Do you flip f/d cards f/u to see if they are spells/traps? Powerful Dream is ok, considering that the monster it battles has to have 2000 or more ATK. Fleeting dream is overpowered, because it could take down a monster with up to 3800 ATK when it attaacks, which is long enough to take down most anything for at least some significant damage. And one more thing, with Waking Dream, when does the effect activate? Is it a Flip effect? Does it activate on the summon? What? Other than that, great cards overall.

Dream Blade
Equip Spell
This card can only be equipped to a monster with "Dream" in its card name. Increase the ATK of the monster equipped with this card by 500. If this card is equiped to a level 7 or higher monster, tribute the selected monster during your end phase to special summon one "Dream Swordsman" from your hand.

Dream Swordsman
Light
*********
Warrior/Effect
ATK 3200/DEF 1200
This monster cannot be Normal Summoned or Set. This monster can only be Special Summoned by the Effect of "Dream Blade". When this monster attacks a defense position monster whose DEF is lower than this card's ATK, inflict the difference as battle damage to your opponent's lifepoints.

Dream Sheild
Equip Spell
This card can only be equipped to a monster with "Dream" in its card name. Increase the DEF of the monster equipped with this card by 500. If this card is equiped to a level 7 or higher monster, tribute the selected monster during your end phase to special summon one "Dream Knight" from your hand.

Dream Knight
Light
*********
Warrior/Effect
ATK 2600/DEF 3000
This monster cannot be Normal Summoned or Set. This monster can only be Special Summoned by the Effect of "Dream Shield". As long as this card remains in defense position, your opponent cannot chose any other monster as an attack target.

Dream Claw
Trap
This card can only be activated while a Dream monster is on the field. Equip this card to one monster on your side of the field that has "Dream" in its card name. Increase the ATK of a monster equipped with this card by 1000 during each of your opponent's battle phases. If this card is equiped to a level 7 or higher monster, tribute the selected monster during your end phase to special summon one "Dream Fang" from your hand.

Dream Fang
Earth
*********
Beast/Effect
ATK 2500/2500
This monster cannot be Normal Summoned or Set. This monster can only be Special Summoned by the Effect of "Dream Fang". Increase the ATK and DEF of this card by 200 for each monster in your graveyard that includes "Dream in its card name.

Dream Weaver
Light
*******
Fairy/Effect
ATK 2750/DEF 2000
When this card attacks, you can change the battle position of one monster on your opponent's side of the field.

King of Dreams
Light
*****
Spellcaster/Effect
ATK 2400/DEF 2000
Tribute one monster on your side of the field with "Dream" in it's card name to destroy one monster on your opponent's side of the field with equal or less attack.

Dream Shift
Spell
Destroy all monsters with "Dream" in their card name on your side of the field. Special Summon a number of monsters with "Dream" in there name equal to or less than the number of monsters destroyed.

Dream World
Field Spell
As long as this card remains face-up on the field, all monsters destroyed or removed from the field by car effect are returned to the owners deck. Reduce the level of all monsters with "Dream" in their card name by 1.

Collapse of a dream
Trap
This card can only be activated while "Dream Master" is face-up on your side of the field and "Dream World" is in play. Destroy all cards on the field, then Special Summon one monster with 1500 ATK or less from your graveyard with "Dream" in it's card name that was not sent to graveyard by the effect of this card.

Reoccuring Dream
Quickplay Spell
This card can only be activated when a monster on your side of the field with Dream in its card name is destroyed and sent to the graveyard. Special Summon the monster that was sent to the graveyard before this card's activation.

Wisdom of a dream
Ritual
This card is used to Ritual Summon "Dream Master". You must also tribute all dream cards with 2000 ATK or more from your side of the field.

Dream Master
Light
*********
Fairy/Effect
ATK 3000/DEF 2500
This card can only be Special Summoned by the effect of "Wisdom of a Dream". You must also tribute all dream cards with 2000 ATK or more from your side of the field. Increase the ATK of this card by 2000 as long as it is the only card on your side of the field.

The Nightmare
Dark
**********
Fiend/Effect
ATK 2000/DEF 1000
This card cannot be Normal Summoned or Set. This card can only be Special Summoned when "Dream Master" is sent to the graveyard. When a monster is summoned, increase the ATK of this card by the ATK of the monster.

Think this is the last one....

Dream Sage
Light
************
Spellcaster/Fusion/Effect
ATK 4000/DEF 2900
Dream Witch #1 + Dream Witch#2 + Dream Witch #3
This card can only be summoned through a fusion summon. When this card is summoned, destroy all monsters on your oponent's side of the field with an ATK of 2500 or more. Negate the activation of a spell, trap, or monster effect that targets this monster and destroy it. Send one monster from your hand to the graveyard to special summon one monster with "Dream" in its card name from your graveyard.