For instance, you could play a white-blue hybrid mana creature in a white deck but still have cards in your deck that are blue
Selfish, but the fact that you can use it multiple times per turn makes it potentially very powerful, especially given Helitrooper packs built-in evasion
Hideaway 5 (When this enchantment enters, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.) At the beginning of your upkeep, you may mill three cards
Until end of turn, you may cast that card without paying its mana cost
This premium marrs a game we all love deeply by reminding us that, at its core, it is just business
It might need an extra little push to become consistent in Standard though