Engines in Yu-Gi-Oh History (Part 3)
You're building your Deck and you feel like something is missing. The Deck is below 40 cards as it stands and you need more. You have the core cards of your strategy and all the staples you need. What else could you even add? Upstart Goblin is at 1, so you don't get many free spots. That is where an engine can come into play.