yugioh jurassic deck Complete Custom for Yu-Gi-Oh! GX Jurrac Stigo | Yu-Gi-Oh TCG

It's as simple as that

There are many strategies to use, and since there are over 10,000 different cards, and more to be added in the future, there are plenty of ways to make any kind of Deck to suit players' individual preferences

Though, if you happen to have Gyarados ex and Vaporeon built and lets say your Articunos HP is running low switch in Gyarados using the Leaf Supporter card or some X Speed Item cards

That sounds reasonable, I guess

While it may be tempting to shotgun the floodgate reborn early, its far better to leave your opponent guessing, and potentially use the second to try again if, say, Radiant Typhoon MSTs the first