This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing from play 3 EARTH monsters on your side of the field, and this card is then Special Summoned to your Spell and Trap area. During your end phase, you may flip any monster on your side of the field to face-down defense position. After you use this effect, rearrange the face-down Defense Position monsters on your side of the field, then return them in face-down Defense Position. Once per turn, select one EARTH monster in your hand and Special Summon it to your side of the field in face-down Defense position. You can flip that monster to face-up attack position anytime during your main phase. 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.