Wizards has failed with its reprint sets over the past couple of years
In a world where most tables dont want to see cards like Stasis or Armageddon, which make the game unplayable for lots of decks, what happens when you roll up with a card that makes one persons deck, in particular, unplayable
As long as your deck runs heavy on draw and discard, you fill your graveyard up with expensive spells (or cheap ones simply by casting them), then once this big boy hits the battlefield, you can start reigning terror on your opponents by casting those big spells from beyond the grave for free
You complete a dungeon when the ability on the bottom room resolves
Unfortunately, however, in the eyes of some players, it seems these changes dont go far enough
For every other color I can make at least some argument for at least one hybrid card