Quote Originally Posted by sonofzeal View Post
What happens if your opponents doesn't happen to have any artifacts in their deck? Or maybe just a one-of thrown in somewhere that may never hit the field. Imagine it's 5-8 turns in and you've yet to see any artifacts on your opponent's board. You've got two Release the Gremlins sitting in your hand. How are you feeling right now?
That's what sideboarding is for. You either know what sort of stuff they're running (you've played against it before), you know the environment you're playing in (eg Kaladesh block and Mirrodin block were both superladen with artifacts), or you're including it to exploit your own stuff. Yeah, it can be sucky to be sitting with a "dead hand", but that's a) part of the learning curve about building decks b) entirely statistically possible.