Triamid Kingolem

All Rock-Type monsters on the field gain 500 ATK. If a "Triamid" monster you control battles, your opponent's cards and effects cannot be activated until the end of the Damage Step. If this face-up card in the Field Zone is sent to the Graveyard: You can Special Summon 1 "Triamid" monster from your hand. You can only use this effect of "Triamid Kingolem" once per turn.