Only 1 shadow priest (and 2 entomb) means that it’s unlikely you’d find the combo, and shrinkmeister just doesn’t do much of anything for you in this deck when played outside of that combo: no SW:P, so a 3/2 and 2 less damage to one of your minions (if even that) doesn’t merit the slot.
Why is shrinkmeister not in this list with cabal shadow priest
Only 1 shadow priest (and 2 entomb) means that it’s unlikely you’d find the combo, and shrinkmeister just doesn’t do much of anything for you in this deck when played outside of that combo: no SW:P, so a 3/2 and 2 less damage to one of your minions (if even that) doesn’t merit the slot.
Justicar replacement???
Sylvanas or second Sludge Belcher.