Its perfect for 5-color goodstuff decks with cards like Jodah, the Unifier, or with token generators like Nesting Dovehawk
Creatures you control can boast twice during each of your turns rather than once
In multiples, this allows you to play a lot of cards previously unsplashable
Admittedly, Ramunap Excavator is much better in Modern where you have access to better fetchlands than Evolving Wilds and utility lands like Ghost Quarter, but maybe there can be some kind of combo-centric self-mill deck that uses my favorite card from the set
This ability triggers every time you take the initiative, but more importantly for us, it also triggers at the beginning of your upkeep
These each have unique cards and playstyles for players to experiment with