They enter untapped, provide good fixing, and have few downsides
Afterlife from the Loam $16.05 Afterlife from the Loam allows you to reanimate one creature from each graveyard, including yours
Also, while building the set's themes, they were conscious of the Deck Builder's Toolkit, making sure the themes they wove in would work with that product
This is the quickest and most accurate way to identify what set the card was printed in and its rarity
Still, we've seen decks make good use of The Mightstone and Weakstone, and Invasion of Ravnica is even more flexible, exiling things like Wedding Announcement, Fable of the Mirror-Breaker, and The Eternal Wanderer along with exiling most creatures
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