If it's a creature card that shares a creature type with a creature you control, you may cast it without paying its mana cost
Natural Order Heres a card for those among you who have ever looked at an Elvish Mystic and thought: Hmm, that sure would look good if it were an Atraxa, Grand Unifier instead. Natural Order is a cheatyface tutor that tags out your worst green creature on board for the best green creature in your deck, which includes gold cards like Koma, Cosmos Serpent and Progenitus
Mono-Green Aggro Before the release of Crimson Vow , Mono-Green was a very midrange-focused Standard deck
The Power 9 consists of: Ancestral Recall Black Lotus Mox Emerald Mox Jet Mox Pearl Mox Ruby Mox Sapphire Time Walk Timetwister Are the Power 9 Still Good
But you can use it to destroy lands, remove enchantments, and get rid of planeswalkers, among the many legendary permanents you may encounter