Wrapping It Up It's not hard to see why the flip cards were considered a failure by Wizards of the Coast
We try to have a full product offering for our fans, and the increased popularity of the Fat Pack seems to have gobbled up the demand for a fourth Magic product (after Boosters, Tournament Packs, and Theme Decks)." I'll let you consider the irony of the official statement as you attempt to count all the various Magic products printed today
Your Grafidggers Cage or Nihil Spellbomb look a lot scarier when you have a Tarmogoyf in play because I am forced to piece something together in a couple turns as opposed to ten
It's good to be aware of these archetypes because they sometimes come up in Limited, like the Lost in the Woods "combo" in Dark Ascension Limited, or making your own surprising imitation of a Fog deck by just drafting a pile of removal and no good win conditions
I don't want to ruin anyone's fun, but I feel obliged to point out one thing
METHOD TO THE MADNESS Just as a well-built sacrifice deck will include cards that trigger when creatures die to improve their resource returns, discard decks have multiple ways to leverage the thing they already want to do