This is a pure race where every point of life and every efficient block matters; Rite of Consumption and the lone Accursed Marauder are too slow or symmetrical against a deck this fast. Tragic Slip is cheap, instant-speed interaction. On its own it gives only -1/-1, which is enough to kill Voldaren Epicure or Sneaky Snacker. Guttersnipe (2/2) and Kessig Flamebreather (1/3) only die to it with morbid active, so save it for turns when a creature has already died, which our sacrifice outlets can enable on demand. Sylvok Lifestaff gains us 3 life each time the equipped creature dies, so equip it to a creature likely to trade or be burned to blunt their burn clock. It only triggers for the equipped creature, not for our other creatures dying. Nihil Spellbomb can strip Sneaky Snacker out of their graveyard before the third-draw trigger brings it back, and it also shuts off the flashback on Faithless Looting and Lava Dart. A Fiery Temper discarded to madness goes to exile first and only reaches the graveyard if they choose not to cast it, so the Spellbomb will rarely catch it.

Snuff Out is mediocre here: it can hit their blue creatures like Spellstutter Sprite, Faerie Seer, Augur of Bolas, and Ninja of the Deep Hours, but those are mostly small utility bodies that already replaced themselves. It can't target the black creatures that matter most, namely Baleful Strix (blue-black), Thorn of the Black Rose, and Mukotai Ambusher. Paying 4 life into a control deck full of removal and card advantage is also a bad trade. Mesmeric Fiend proactively strips their best card from hand, which is huge against a deck that wants to sit back and draw cards. Try to resolve it when they are tapped out or short on Counterspell mana. Tragic Slip is efficient, cheap removal that kills Baleful Strix outright and takes out Thorn of the Black Rose once a creature has died this turn, and it doesn't ask us to overextend. Sadistic Glee and Rite of Consumption are too cute against a deck with ample removal and Counterspell backup.

Spy Combo wants to mill itself with Balustrade Spy and Winding Way then reanimate huge threats with Dread Return, so graveyard disruption is premium: Faerie Macabre and Nihil Spellbomb can exile key reanimation targets or strip the graveyard before Dread Return flashback (which requires sacrificing three creatures) gets going. Tragic Slip is cheap, efficient removal for their early mana dorks like Elves of Deep Shadow, and with morbid it can kill much bigger creatures. Snuff Out is weak since many of their biggest threats like Troll of Khazad-dum, Balustrade Spy, and Lotleth Giant are black and can't be targeted, leaving only nonblack creatures like Sagu Wildling as legal targets, and their deck is grindy and slow enough that paying 4 life repeatedly is not worth it. Rite of Consumption and Sadistic Glee are too narrow against a deck that isn't racing on damage.