You cannot build a deck in which it is a good card without knowing what you are up against
In addition to forcing each player to skip their discard phase, Anvil of Bagardan grants each player an additional draw at the beginning of their draw phase, but then they must choose and discard a card from their hand, offering those playing with graveyard shenanigans the free discard outlet they would have gotten at the end of the turn but now just at the beginning, meaning they could take advantage of it during their respective turns
By itself, Dredge can seem underwhelming, especially when it's on an unexciting creature such as Stinkweed Imp
T'au = T'au
Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel Blood Artist is the gold standard for sacrifice payoffs in Magic, so a legendary one makes perfect sense
Even a player whos got no interest in the story will get a bit of a jolt from seeing Jace, once the poster boy of MTG and its foremost hero, becoming one with the Phyrexians and ending up covered in extra mechanical eyes