(Consider that my advice-nugget, you who aspire to do such work!) I thought about it overnight
Lulu, Stern Guardian* From the Final Fantasy 10 Commander Deck, Lulu here is an interesting combat deterrence card, and has a powerful proliferation activated ability that is of great use to counter decks, and poison decks
Some graveyard decks run this artifact as their hate piece of choice, like in the Living End example
The most recent set, Outlaws of the Thunder Junction , even brought back the line with a little twist: caring about putting the Aura on an opponents creature
I'd even argue that it's a good thing that you have to think about which catch-up cards you want to include in a deck instead of just mindlessly a bunch of staples together
Each round is a race to 20 points