lol, black is one of the weakest colors. vraska's edict also sucks balls and is something you either board in or you're playing because you have nothing else, chumping a mite and giving them a poison is barely worth a card. It's also overdrafted because new players ludicrously overrate poison
After a few more 7-wins on arena, I've gotta say though -format feels solved, and it's pretty shit. Blue is such a dogshit color that you can pretty early on figure out if anyone else at the table is even remotely trying to get it - there's enough good cards in that entire color pool for maybe one person to have a good UW shell. UB happens if you get some of the really good bombs or like 3 voidwings, UR is if you get a great blue bomb and have a lot of hexgolds and maybe a chimera, and UG is for when you want to lose or you're banking it all on blue sun's zenith. If you play a competent U player, they're gonna shit out like 5 raptors because no-one else was touching the color
You don't just exclusively draft the lowest stuff possible - you will run into a wall. Games often stall out when both players have low curves and don't stumble - though if someone does stumble or tries to play a higher curve, yeah, they're bulldozed. To win, you grab your early staples in colors that aren't blue and preferably aren't black (I would take a vorrac or a volt charge or a crawling chorus over anoint with affliction p1p1 every time). They're all low-curve. Once you get to a pack without the must-picks, you grab a good 2-3 top-end cards.
Black and blue don't really have good top-end cards - quicksilver fisher blocks like garbage (and isn't an artifact, which ffs), the blisterzoa and grimnarch are way too slow, nimraise paladin and sheoldred's headcleaver both die to hexgold slash. Scraptrap is OK. Compare that to Chimney Rabble, Furnace Strider, Skywarden, Finisher, Oil-Gorger, Lattice-blade, basilica shepherd, porcelain zealot. They break open a stalemate, solidify an advantage, or put a stop to your getting run over. Going purely low-curve will get you beaten by someone with a low-curve + 1/2 uppers.
You then hope that you don't get the play. Going second is a massive disadvantage, and missing a single land drop while like that is almost a guaranteed game over. You also then hope that the opponent didn't get any of the planeswalkers not named nahiri or tyvar. Because on top of it all, in addition to be a stupidly fast and snowbally format, lots of rares are 3/3 or 4/4 vanilla creatures, unplayable, or immediate 'I-win-the-game' buttons. It feels like a prince format because of how stupid it is to see someone drop the eternal wanderer.