Lich's Mastery clearly states that you cant lose the game under any circumstances (life loss, mill), and it has hexproof
Also, while one-versus-one matches extend for five additional turns after the round timer ends, 2HG matches are only allotted three extra turns when time is called
This is what makes Blood Sun so tempting to build around, as a card that you can incorporate for a low in-game cost, where even when it doesnt impact the opponent much, it replaces itself with no fuss
Luckily, Hasbro has delivered and they are all weird and interesting to build decks around
Even obscure cards can move in price if collectors, Commander players, or older format players suddenly want them
The Remaining Good Common/Uncommons Necrogen Rotpriest: Doubling up Toxic and handing out Deathtouch on a whim