Cannot attack directly. If this card is banished: You can Special Summon this card, and if you do, this card gains 200 ATK for each of your banished Dinosaur monsters. You can only use this effect of "Giant Rex" once per turn.
I even have 11. If I only cards will be available once again, I didn't grind hard last event. Like Flare Resonator, I almost cried before the event ends I got my 3rd one BUT it was available again the next Jack event. Dumb Konami. Lol
No use 3 if you want to use this it’s still a 2000 Attack monster with little draw back
You can use Gold Sarc from the Silent Magician EX Structure Deck to banish Giant Rex staight from the Deck to Special Summon it and it won't return to hand after 2nd Standby Phase since it isn't banished anymore.