Protean hulk dies with trigger, grabbing putrid imp and gitrog monster.
Discard dakmor salvage to putrid imp, trigger gitrog to draw, replace draw for dredge 2 on dakmor salvage.
Repeat step 3 until either no cards are left in library or you are comfortable with what is left.
By this point a Narcomoeba has been milled (hopefully) and is now on your field.Sacrificegitrog, Narcomoeba, and putrid imp to flashback dread return in grave target thassa's oracle and win.