#1: Smugglers Copter Looter Scooter is absolutely ridiculous and one of the most powerful cards in all of Kaladesh
Status Effects: Number 94: Crystalzero's detach effect halves the current ATK of a face-up monster on the field until the end of the controller's turn
Cheap cards like Llanowar Elves can accelerate you early and then become decent threats later
they offer mana of one of two colors and they can enter untapped, but there are only so many shocklands you can play untapped before it becomes a problem, and more importantly, there are a lot of Magic formats where they are commonly played, so players will encounter them a lot
Most people have terrible decks, because its currently very difficult to build good ones, even if you spend a lot of time playing the game
The basic idea is that we get an Enter the Infinite and a cheap sorcery imprinted on Spellweaver Helix, then we cast the cheap sorcery to get a copy of Enter the Infinite