Some help this combo but a few make you want to wonder who made me mad.  


Magna Gear Dragon
LV12 / DARK / Machine / Fusion
5000 ATK / 5000 DEF
1 LV8 or higher Machine type monster + 1 LV8 or higher Dragon type monster + 2 or more of any other Dragon and Machine type monsters (The ratio of dragon to machine type monsters must be 50/50)
This card's type is also treated as Dragon.  This card's Attribute is also treated as LIGHT.  If this card attacks and the attack is successful this card is changed into Defence Position at the end of the Damage Step.  If this card is changed from Defence Position to Attack Position during the battle phase after a successful attack from this card this card can attack again (This effect applies each time the condition is met).  Additional Attacks the same turn from this card don't inflict damage but if this card's ATK is higher than the attacked card's ATK or DEF depending on it Position that card is destroyed.  You can destroy 1 card on either player's field or in their hand for each additional fusion material monster other than the 4 needed when this card is summoned.

This bad nightmare of a card takes being a pain to a whole new level.  If someone can't stop its two effects or its attacks this thing will keep attacking until there is nothing left.  Lucky for them it takes some planning to bring out.

Dragon's Scrapyard
Continuous Spell
All Dragon Type monsters on the field gain 500 ATK and DEF for each Machine Type Monster in your graveyard.  

Dragon's Booster Array
Continuous Trap
All Dragon Type Monsters on the field gain 1 additional attack for every 3 machine type monsters in your graveyard.

Scale Mech Armor
Continuous Spell
All Machine Type monsters on the field gain 500 ATK and DEF for each Dragon Type Monster in your graveyard.

Machine's Dragon Heart
Continuous Trap
All Machine Type Monsters on the field gain 1 additional attack for every 3 dragon type monsters in your graveyard.


Hacker Dragon
LV4 / LIGHT / Dragon
1000 ATK / 1000 DEF
Twice per turn you can Banish either 2 dragon type monsters from your graveyard to take control of one Machine Type monster your Opponent controls.

Dragon Chainer Bot
LV4 / EARTH / Machine
1000 ATK / 1000 DEF
Twice per turn you can Banish either 2 machine type monsters from your graveyard to take control of one Dragon Type monster your Opponent controls.

Dragon Mech Surgery
Continuous Trap
During each of your standby phases flip a coin and apply one of the following effects while this card is face-up on the field or until this effect is activated again. (This effect is mandatory so you have no choice but to activate it!)
-Heads: All monsters on the field and in the graveyard become Dragon Type monsters.
-Tails: All monsters on the field and in the graveyard become Machine Type monsters.

This last card here makes it a lot easier to get Dragon/Machine Cards onto the field or into the graveyard.  Basically why have them in your deck when you can just change them to what you need.  Only issue is its effect is automatic so you don't have a choice but to use it once it is in play.

Will add to this mess later.  Any ideas?