Early game engine commanders like Rhys the Redeemed or enchantment-focused decks like Sythis, Harvests Hand and Tatsunari, Toad Rider might survive a few more turns because your opponents dont want to give you the card advantage when they destroy your commander
Thought-Stalker Warlock Rating: 6/10 A simple Ravenous Rats would do me fine, but elevating Thought-Stalker Warlock into a Grief simply by having your opponent lose some life is pretty amazing
One other subtle strength here is the degree of control you can have over exactly when cards are milled, and how many (assuming you have painlands or other unrestricted self-damage sources)
Two decks and a combined total of 30 new-to-Magiccards15 unique cards in eachlet you jump into the action immediately or update your Commander decks with more from I
Focusing on discard is certainly the most common, and its quite effective with cards like Containment Construct to help break symmetry, but you can toy around with sacrifice synergies and even fiddle with a group-hug-esque strategy depending on your card choices