Free flashback stuff is nice, and as much as I want Final Days to be broken, it's not, but it is solid in these decks
Zoraline, Cosmos Caller Zoraline, Cosmos Caller gives you a clean Orzhov game plan: Attack with bats, gain life, and reuse cheap permanents for steady value
At four mana, he can sit at the top of your mana curve, and if you manage to drop a haste enabler such as Goblin Warchief, you can start doubling your goblins straight away (which then also have haste to attack the turn they enter)
(If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.) Whenever this creature attacks, put a +1/+1 counter on target modified creature you control
Much like Contraband Livestock, I think theres some cool gameplay value in the mini-game rolling this each upkeep
While this won't allow you to cheat out too many hard hitters, you should be able to secure some great defenders or creatures that are costly thanks to their abilities