Basic lands (Plains, Island, Swamp, Mountain, Forest) are crucial
The second reason I think it makes Magic better is that it disrupts the expected flow of the game, it mixes it up and allows situations where turn two things are happening on turn one
Standard is our only rotating format, and while keeping it fresh is important, we also feel that there's a more effective middle ground. In my opinion, this also makes new cards a bit less impactful (at least for those playing the killer decks): as shown by non-rotating formats like Modern, Pioneer, and Explorer, the bigger the card pool, the less impactful new cards tend to be
I have tested too many matches against very good opponents to believe that it will take down the Mythic Championship
Remember that a split card on the stack only has the characteristics of whichever half is currently on the stack