Special Summon this card as an Effect Monster (Rock-Type/EARTH/Level 7/ATK 0/DEF 2500). (This card is also still a Trap Card.) While this card is an Effect Monster and you control another Trap Card that is a monster, this card cannot be targeted by your opponent's card effects. While this card is an Effect Monster, if a card(s) is Special Summoned from your Spell & Trap Zone as a monster (except during the Damage Step): You can target 1 card on the field; destroy it.