So just buy the cards you like, unless they somehow add up to more than the decks price
While the two first modes speak for themselves and would already constitute a strong magic card, the last mode is more format dependent and as it stands, it is a very effective ability in the current Modern metagame
The one innovation was that, while Innistrad only had DFCs that were a creature on both sides (and one planeswalker on both sides at mythic rare), Dark Ascension had two DFCs that started as artifacts, one of which wasn't even a creature on the back face
Geist-Fueled Scarecrows ability applies to creature spells even if youre casting them for an alternative cost (such as that of emerge)
You simply cannot just counter spells forever and expect to be invited back to the table next week
When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library