Its hard to pin down why this is, especially since there are over a dozen cards in the deck that Id categorize as card advantage, with the best ones being Idol of OblivionIdol of Oblivion, SkullclampSkullclamp, and Shamanic RevelationShamanic Revelation
For those of us who seek guidance in our Ventures, Adventures in the Forgotten Realms offers nine classic module framed lands, like this new version of Evolving Wilds
When tables rely on nonbasics, this instant can wipe huge chunks off life totals and end games immediately
Mill or discard an Asmodeus the Archfiend, and 3 mana gets you seven cards
It creates a Boo creature token each turn, encouraging you to either grow the rodent with your plus ability or 'fling' it at the enemy with the minus