Is this ever a cube deck? Could it BE a deck if some of the more generally-useful stuff is in the maincube and a super-narrow enabler or two in the sidecube?
(various cards that let you search for lands)
(various black spells that make your opponent lose X life)
(cycling lands and lands that can become creatures)
(various cards that let you search for lands)
(various black spells that make your opponent lose X life)
(cycling lands and lands that can become creatures)