Terra Firma Gravity [PP02-EN013] Secret Rare Crucible of War This card cannot be Special

This card cannot be Special Summoned except by Tributing 1 "sphinx" monster

When this card leaves the field: You can Special Summon 1 "Shooting Star Dragon" from your Extra Deck

If this card successfully attacks directly

If you Tribute Summon a monster that includes "Ancient Gear" in its card name

or your Graveyard

Terra Firma Gravity [PP02-EN013] Secret Rare Crucible of War This card cannot be SpecialSet: Premium Pack 2 Card type: Normal Trap Rarity: Secret Rare Activate only during your opponent's Battle Phase. All Level 4 or lower monsters that can attack a face up "Elemental Hero Terra Firma" you control must attack it.