While piloting the Golgari Yawgmoth deck, Ive regularly ruined an opponents board simply by killing off their creatures/shrinking them enough to make attacking unprofitable, and Ive even proliferated an opponents Chalice of the Void from one to two to lock them out of casting a bunch of spells
Rune-Tail, Kitsune Ascendant Rune-Tail, Kitsune Ascendant is a really interesting Commander card due to how easy it is to flip in that format
At GP Barcelona in 2019, during the Hogaak Summer, I was playing Hogaak against Eldrazi Tron on Day Two and my opponent opened with a Leyline of the Void and Grafdiggers Cage on turn one, on the play
Upon entering the battlefield, Gisa and Geralf put the top four cards of your library into your graveyard
Youll need to do some work because it doesnt enter prepared, and sometimes this creature dies before it can do any gravedigging