Check out the Wizards of the Coast WPN store locator to find your nearest pre-release event for Aetherdrift, happening from February 7.
When this enchantment leaves the battlefield, each player shuffles their hand and graveyard into their library
This is card advantage already but you can get more spells later in the game after you've got the mana
Creatures (28) 4 Blood Artist 4 Stitcher's Supplier 3 Midnight Reaper 4 Priest of Forgotten Gods 3 Cauldron Familiar 2 Stonecoil Serpent 3 Woe Strider 2 Lurrus of the Dream-Den 3 Archfiend's Vessel Lands (20) Spells (12) Stonecoil Serpent is pretty cute with Agadeems Awakening in a deck with Blood Artist and Midnight Reaper, since it just adds a death trigger to any casting of Agadeems Awakening, and its not that bad of a card to just cast normally
while there were a few different cards that required six mana (Personal Incarnation, Force of Nature, Demonic Hordes, Shivan Dragon, etc), Lord of the Pit was the only one that demanded seven