While it's in play, player's can't gain life
However, the most spicy land to add is City of Shadows, which is terribly in most decks but an allstar here since we can sacrifice The Hollow One to it to get the first storage counter and then just proliferate for incredible ramp
A 6/6 with flying, whenever it attacks, Vaevictis Asmadi's controller can choose a permanent under each player's control and force those cards to be sacrificed
Modern proved to be the perfect forever-home for Cryptic Command, and its only natural that the card would become the darling of blue players throughout the community
The card draw alone is enough reason to play this card, but in any control shell, you can make that second ability not even a downside and eventually win off the first ability
Make sure you review the final design to ensure all the details are correct