Those for whom it does were lucky
That's Abeyance in a nutshell: great for letting you get your own combos off while getting you through your deck, not so good when your opponent can still cast Viashino Sandstalker and attack you that turn
RW gets Lorehold, the Historian, a cost reducing, miracle making rummager
Warhammer 40K s Callidus Assassin is a baseline 2-for-1 that often gets stronger once you factor in whatever abilities it steals from the creature it copies
Master of Cruelties Weighing in at five mana (one red, one black) Master of Cruelties is a creature card that can help you pull back from even the most desperate situations
Vito, Fanatic of Aclazotz Marcy: I do like the scaling sacrifice aspect of the card, although the sacrifice anvil meta has kind of died off in Standard, and there aren't a lot of sacrifice decks that would benefit from working Vito into them