Malakir Rebirth = Malakir Mire (This works with Grief as well as a T1 play, Swamp, Grief evoked (sac trigger on stack use Rebirth) for Grief to ETB tapped and have them discard two.
Glasspool Mimic = Glasspool Shore (This is a land creature (creature side up in GY) that can be used with Tortured Existence)
Clearwater Pathway is the blue side, the other is black.
Card I cant tag because of forum wont let me post apostrophes -- Krrik, Son of Yawgmoth 4 colorless and 3 phyrexian black Horror Minion, Lifelink, for each black in a cost you may pay 2 life rather than mana (think Tortured Existence) Whenever you cast a black spell, put a 1 1 counter on Krrik.
The concept is a mid range creature deck that revolves around Tortured Existence. Cards like Master of Death and Krovikan Horror act as card advantage recurring to hand to be pitched again to TE. Cabal Therapist often sacs itself early, but can sac other cards like Jadar tokens. Strix digs you deeper while acting as a road block. Tourach is sort of a finisher and discard spell hybrid as is Grief. The more traditional finishers are Linessa (Buried Alive to tutor both, usually with Krovikan Horror below them, so you will get an extra buy, or find Master of Death if the horror will be too hard to stack correctly with TE out) where you cast one and discard the other to bounce their board repeatedly using TE. Krrik for cheating on mana and Scavenger Krrik and Kalitas have lifelink to help build that resource. Kalitas is a big beater. Shriekmaw and Plaguecrafter deal with creatures, while Necroplasm acts as a sweeper.