I bought four March of the Machines packs and hit a duplicate (so three unique options)
It's a rare effect that I often bring up when the old 'ramp versus mass land destruction' argument comes up, because mass land destruction categorically does not in any way help against ramp, and this mechanic does
Themes: Food tokens, lifegain, and Hobbit tribal
The Pain Land cycle, for example, would not be considered colorless Lands because their ability to tap for colors is why you play them, not because of extra colorless utility
Hedronize was a keyword action where the player rolled an hedron-shaped (eight-sided) die to get an effect
96-120 lands is the most you can include at 360 before players start ending up short on playable, non-land cards. As the above table shows, the average number of unplayable cards per deck actually doesnt appear to change much based on the amount of fixing in the cube it basically hovers around 7 or 8