Without question one of the best green artifacts and best creaturefall cards, The Great Henge is money in any green deck with enough stompers to get it out quickly
On that note, black is the color containing the majority of the best reanimator cards and support, so all entries on this list will contain black in their color identity
For example, to cast a sorcery spell from a graveyard, you can do so by paying its mana cost only during your main phase while the stack is empty
That's handy because you never know when a random common or uncommon like Stock Up or Into the Flood Maw is going to spike in price
For example, you can exile a card with suspend that has no mana cost or that requires a target even if no legal targets are available at that time
Yes, a 3/1 creature with vigilance is more fragile than a 2/2 with first strike