(Also, Sol Ring is a 1-drop, and most ramp really starts on turn two, so I think it's better to think in terms of what we can reliably get, rather than luckily starting with one of 99 cards.) So, let's say I'm building around a 5-drop Commander who really needs to be on the 'field before I can start doing my thing
Blood Moon turns all nonbasic lands into basic mountains, so decks that lean on fetches, duals, shocks, and fancy utility lands can suddenly be stuck doing nothing
That being said, cards like Maddening Cacophony and Traumatize are still good for a one-time payoff
As long as your creatures have counters on them, even death wont stop them from buffing your board
I originally wanted to include a bunch of tiny dragons flying around, to show off how huge the Ur-Dragon is supposed to be, but they all just kept looking like weird purple blobs, so I gave up on that