Cannot be Normal Summoned/Set. Must be Special Summoned by “Tramid” card effects, and cannot be Special Summoned by other ways.
(1) If a “Tramid” monster, other than “Triamid Sphinx”, you control is destroyed by battle or card effect: You can Special Summon this card from your hand.
(2) If you control another “Tramid” card, this card gains 500 ATK for each different Field Spell Card in your Graveyard, also your opponent’s monsters cannot attack, except attacking “Triamid Sphinx”.