there is a fusion of new and previously released cards from older sets with a lot of support for both of our heroes
Green is a great color identity, so players don't have to be too picky when deciding on a background for him, and the deck's included background, Passionate Archaeologist, is probably the best choice
Again, the mana makes it feel a little more suspect than something like Phyrexian Arena, however, you do get to look at the cards you mill and make your choice from a wider range, making this card far more helpful in late game scenarios where you are looking for something specific
Crew 1 The Lunar Whale lets you look at the top card of your library whenever you want (with one restrictionsee below), even if you don't have priority
It could be hard to fit it into an Omnath, Locus of Creation deck, for instance, but most decks with three or fewer colors should be able to find room somewhere