You need to be able to get enough playables and too much over 20% of your cube makeup as lands does start to get a touch awkward
Now, lets look at the best colorless options available for your next build, shall we
Your permanent's echo ability will trigger at the beginning of your upkeep if it entered the battlefield since the beginning of your last upkeep, or if you gained control of it since the beginning of your last upkeep
The two-drop's ability to work as a discard outlet, aggro threat, and card advantage engine has given it a home in every format from Standard back to Legacy, although its current rise is mostly tied to Pioneer where the two-drop synergizes with the newly unbanned Smuggler's Copter, giving it a home in Rakdos Midrange, the most played deck in the format
Its also an example of the galaxy-brain thinking Wizards of the Coast have to apply to new cards so they fit into their game-wide rules around rarity
Edgar's last ability will apply to each of those five flips, meaning they'll all come up heads and you'll take five extra turns as a result