Rogue Necromancy - in each and every of my Marcus lists. Three-headed, Blasts, Ca, Ml7, Imbued Energies. Must-have.
Dawn Serpent - it's only drawback is being a Minion. Other than that, it's usually unkillable, making Hunting Party a real pain in the ass for the opponent.
Night Terrors and Shikome - haven't used them and TBH I don't see a place for them in my lists (usually run Myranda, Angelica, Emmisary, Raptor, Jackalope, Cerberus, Killjoy, Hoarcat Pride).