Like most Pokmon cards, the value of Dragonite depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Fossil)
It will go for hundreds of dollars, potentially thousands if the card ends up being good, and its the one thing you really want to open in the set
If you're fine missing your third land for one or two turns, and are much more worried about flooding, consider cutting lands
You can special summon this card from your hand if you have a synchro monster on your field or in your graveyard
When it deals damage to an opponent, Flamewar, Streetwise Operative will exile cards from your library equal to the amount of damage done face down with an intel counter on it
Because of this, it can be frustrating to build a deck to begin the game with, and some players are dissuaded from trying the game by this initial difficulty