All Rock-Type monsters on the field gain 500 DEF. "Triamid" monsters on the field cannot be destroyed by card effects. If this face-up card in the Field Zone is sent to the Graveyard: You can target 1 "Triamid" monster in your Graveyard; add it to your hand. You can only use this effect of "Triamid Fortress" once per turn.
NM-Mint Unlimited - $0.25
Lightly Played Unlimited - $0.23
Moderately Played Unlimited - $0.20
Heavily Played Unlimited - $0.17
Damaged Unlimited - $0.13
NM-Mint 1st Edition - $0.25
Lightly Played 1st Edition - $0.23
Moderately Played 1st Edition - $0.20
Heavily Played 1st Edition - $0.17
Damaged 1st Edition - $0.13
NM-Mint Unlimited Non English - $0.25
Lightly Played Unlimited Non English - $0.23
Moderately Played Unlimited Non English - $0.20
Heavily Played Unlimited Non English - $0.17
Damaged Unlimited Non English - $0.13
NM-Mint 1st Edition Non English - $0.25
Lightly Played 1st Edition Non English - $0.23
Moderately Played 1st Edition Non English - $0.20
Heavily Played 1st Edition Non English - $0.17
Damaged 1st Edition Non English - $0.13