It's just not a Black Market Connections by any means Credit: Wizards of the Coast Sandman's Quicksand Saffgor: Being 4 mana on the mayhem means this is a sweeper that comes down too late, on top of most actual threats in the game starting at 3 toughness in a world where Shock is ever-present in Standard
As Mastromatteos investigation unfolded, he asked for scans of Emorys cards
Gate to Phyrexia, Chaos Warp, Tithe, and other ways colors get to do things they ordinarily can't make it easier to build decks exclusively using that color
As for the downsides, it only untaps one of your creatures and is a sorcery
The feeling of being told no by a piece of stax-lite, or having a game-altering card played, can often feel pretty tilting, especially given that other players at the table might still be able to pop off through that stax piece, or not care about the undercosted threat