Shadow of the Second Sun is huge here, as you can get your commanders benefit right after casting the Shadow, as is Portal to Phyrexia to undo whatever benefits your opponents obtained
For just one mana, you get a creature on the battlefield that can tap itself for any color
Finally, Hour of Devastation doesn't have a rare land cycle, which is often the reason some good sets in the past (like Khans of Tarkir or Return to Ravnica ) have low mythic valuesthe fetch lands and shock lands were eating up a lot of the valuebut this isn't the case with Hour of Devastation
Black-Red features the set's other new mechanic, Mayhem, which lets you play cards for cheap from your graveyard if you discarded them on the same turn
Black Lotus Arguably the most iconic card in MTG history, Black Lotus offers an unparalleled mana acceleration
Activate only as a sorcery. Only being able to activate this as a sorcery means itll have to be on your turn, but all you need to do is find a way to drain your own life and you can save a lot of mana with ease