Most games give me a Jace's Phantasm Within the first few turns of play if it is not in my opening hand. Pairing him immediately with Mind Sculpt and he is nearly powered up as early as turn 3. I usually take a few hits but i can afford to lose the health until he is powered up and ready to go playing any cheap excuse i have to mill out 10 cards into his graveyard and start wailing with 5/5 fliers. Consuming Aberration seems to be the key cornerstone to deck so getting it out as soon as he has cards in the graveyard is a must but with so many playing blue in their deck waiting until they are tapped enough in order to play him without getting countered. Next I focused entirely on getting the most out of him while he was alive, usually by turn 5 or 6 being too big to deal with by damage alone, i have him attack every turn and I cast spells like Death's Approach just to trigger his effect. If he has not dealt with your aberrations or killed you by the time 20+ cards have been milled and there is an aberration on the field Essence Harvest is a 1 hit KO. If the aberrations are dealt with then rellying on the phantasms for damage, and the wights are not a bad idea.
The deck seems to do very well as long as the field is clear. I need to play with it more to see if there is something i can do against blitz/burn or hard control decks who can shut down the consuming aberrations. Other than them being vulnerable to insta pop spells, the deck has performed spectacularly against any deck it goes up against. Between the psychic strikes and the grisly spectacle they do a decent job of making sure the field is clear. I am skeptical against boros who can get great blitzes very early in the game but we shall see. Also Essence Harvest is so incredibly broken in this deck since it was casual. Its a 3 mana winner.
For improving it i think dropping Necropolis Regent is a good idea i never really got to abuse her much in this deck. She is nice to have but she hasnt had her chance to shine. Also the Balustrade Spys are not really being as awesome as id hoped. They usually serve as fodder after their mill is triggered.