You can use the (2)nd effect with this card’s name only once per turn.
(1) You can send this card that is in your hand or face-up on your field to the GY, then target 1 Dragon monster you control; it gains 500 ATK/DEF until the end of your opponent’s turn.
(2) If a Normal Monster(s) is sent to your GY while this card is in your GY: You can Special Summon this card, but banish it if it leaves the field.