Haunted Angel Linvala, the Preserver Seraphic Steed Soul of Emancipation The Book of Exalted Deeds The Pit
The Dragonlord is very practical at smashing on arrival
Essentially what this does is that before damage, your opponent loses 2 life if they block your Slivers and that means theres a chance if you hit for exactly enough Afflict, they can block all they want, the combat step will just end before damage
While there aren't a ton of sacrifice payoffs available at lower rarities, the high rarity has cards like Sephiroth, Fabled SOLDIER and Zodiark, Umbral God as fantastic top-ends
This becomes increasingly better as the number of opponents increases, and a little Sensei's Divining Top trickery can go a long way to secure a big follow-up like Combustible Gearhulk
Spectacle cares only that an opponent lost life during the turn, not that the opponent's life total is currently lower than it was