Jurracs are fire dinosaur archtype, starting in Hidden arsenal 2 and coming out in the restent hidden arsenal 3. They use dino support like Fossil Dig and Jurassice World. Their main support includes cards like solidarity if you run all monsters. Jurrac Guiba can search out monsters when it destroys one by battle, like Blackwing Shura the Blue flame. Then synchro summon for Jurrac Giganto. Jurrac Giganto is the main card of many jurrac decks as it gives all Jurracs attack, enabling OTKs and such, with two out they all gain double attack! Also Jurrac Velo is very good beatstick and can special summon monsters from the deck.