All Rock-Type monsters on the field gain 500 DEF. "Tramid" monsters on the field cannot be destroyed by card effects. If this face-up card is sent from the Field Zone to the Graveyard: You can target 1 "Tramid" monster in your Graveyard; add it to your hand. You can only use this effect of "Triamid Fortress" once per turn.
Atom 1.0
