Yin Yang archetype

[LastTrain]

Yin-Yang, The Balanced Plain
Field Spell
If there is not both a "Yin" and "Yang" monster on the field, this card is destroyed during the End Phase. Once per turn, you can switch the ATK and DEF of all face-up monster on the field. Also, once per turn, you can Special Summon 1 "Yin" or "Yang" monster from your hand, who's Level is equal to a "Yin" or "Yang" monster on the field.

Yin, Overlord of the Balanced Plain
LIGHT/Warrior - Effect/10/3000/3000
If there is no "Yang" monster on the field during your End Phase, destroy this card. When this card is destroyed by a card effect and sent to the graveyard, Special Summon 1 "Yang" monster from your graveyard during the End Phase. When a "Yang" monster is summoned, you can Special Summon this card from your graveyard. During the turn this card is summoned, neither player can Set or activate Spell or Trap cards until the End Phase. You can only control 1 "Yin, Overlord of the Balanced Plain".

Yang, Overlord of the Balanced Plain
DARK/Warrior - Effect/10/3000/3000
If there is no "Yin" monster on the field during your End Phase, destroy this card. When this card is destroyed by a card effect and sent to the graveyard, Special Summon 1 "Yin" monster from your graveyard during the End Phase. When a "Yin" monster is summoned, you can Special Summon this card from your graveyard. During the turn this card is summoned, neither player can activate Monster card effects (except this card) until the End Phase. You can only control 1 "Yang, Overlord of the Balanced Plain".

Yin's Knight
LIGHT/Warrior - Effect/4/1900/1900
If there is no "Yang" monster on the field during your End Phase, destroy this card. When this card attacks a defense position monster with DEF lower than this card's ATK, inflict the difference as damage. When this card attacks, you can change the battle position of the attack target (if the monster is face-down it is flipped face-up).

Yang's Knight
DARK/Warrior - Effect/4/1900/1900
If there is no "Yin" monster on the field during your End Phase, destroy this card. When this card attacks a defense position monster with DEF lower than this card's ATK, inflict the difference as damage. When this card attacks, you can change the battle position of the attack target (if the monster is face-down it is flipped face-up).

Yin's Scout
LIGHT/Warrior - Effect/1/1200/1200
If there is no "Yang" monster on the field during your End Phase, destroy this card. When this card is destroyed and sent to the graveyard, Special Summon 1 Level 4 or lower "Yang" monster from your hand or Deck. Shuffle the Deck.

Yang's Scout
DARK/Warrior - Effect/1/1200/1200
If there is no "Yin" monster on the field during your End Phase, destroy this card. When this card is destroyed and sent to the graveyard, Special Summon 1 Level 4 or lower "Yin" monster from your hand or Deck. Shuffle the Deck.

Balance Leveler
Quick Play Spell
Activate one of the following effects:

* Destroy 1 "Yang" monster, and Special Summon a "Yin" monster of the same Level from your hand, Deck, or graveyard.

* Destroy 1 "Yin" monster, and Special Summon a "Yang" monster of the same Level from you hand, Deck, or graveyard.

Balance Shift
Normal Trap
Activate one of the following effects:

* Select 1 "Yang" monster. Special Summon a "Yin" monster of the same Level from your hand or Deck.

* Select 1 "Yin" monster. Special Summon a "Yang" monster of the same Level from you hand or Deck.

I plan to make more, feel free to suggest ideas.

[Antwo13]

This is actualy a very well balanced deck of Yin and Yang. :]
Nice. 8/10