The true beauty of the game lies in the debate itselfa rich mosaic woven from threads of MTG power level , format-specific strategy, collector's passion, and personal history
Grade: 2.5 Ray of Frost Tapping after the deed is done feels bad, but I suspect people will overrate this based on the few times they luck out and face an opponent with Mountains
Mitotic Manipulation (an underrated blue ramp piece in its own right) can find Islands and Swamps when you want extra mana, but it can also be a way to dig for another Nazgl to have the Ring tempt you and pump the team
Personally, I can't comfortably argue that Green is the most competitive mono-color in commander
At risk of going way off topic, a great way to frame this is in relation to fast mana
Its two useful tools in one clean package