This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing from play 3 DARK monsters on your side of the field, and this card is then Special Summoned to your Spell and Trap area. As often as you like, during your turn, you can select 1 monster card from either Graveyard and remove it from play. Then select 1 face-up monster on your side of the field and increase that monster's ATK and DEF by 500 until the end of your opponent's next End Phase. Once per turn, select one DARK monster in your Hand and Special Summon it to your side of the field. If a monster is special summoned in this way, send 1 face-up monster, besides the summoned monster and this card, to the Graveyard. While this card is in your Spell and Trap zone, It gains the following special ability:
As long as you have monsters in your monster zones, this card cannot be affected by the effect of an opponent's Monster, Spell, or Trap card, and it cannot be selected as an attack target. This card cannot attack.