Fellremoval$1.21Efficient black removal that can answer a creature at a very low mana cost, though it trades the Capsule's repeatable artifact body for a one-shot spell. It serves the same early-game creature-answering role in black decks.
Go for the Throatremoval$0.49Premium cheap black removal for creatures, often functioning as a cleaner and easier-to-cast answer than Executioner's Capsule. It fills the same spot as a low-cost creature kill spell.
Infernal Graspremoval$7.00Another efficient black instant that destroys a creature outright, with the downside of 2 life instead of the Capsule's artifact repeatability. It is a broadly useful substitute in the same removal slot.
Tragic Slipremoval$0.25Very cheap black creature removal that can be exceptional in sacrifice-heavy decks. It overlaps with Capsule as an early answer to problematic creatures, especially in black attrition shells.
Victim of Nightremoval$0.20A very efficient black kill spell that destroys most non-tribal creatures. It is a closer functional equivalent for black creature removal, with a narrower restriction instead of Capsule's color restriction.
Doom Bladeremoval$0.29Classic black removal that cleanly destroys nonblack creatures, matching Capsule's target restriction closely. It is one of the most direct functional analogs.
Hero's Downfallremoval$0.14Kills creatures or planeswalkers, giving broader utility while staying in the same black removal space. It is a stronger, more flexible version for decks that can pay a little more mana.
Murderremoval$0.17Straightforward unconditional creature removal in black. It is less efficient than Capsule's artifact-based setup, but it serves the same basic role of answering a single threat.