Each creature has “When this creature dies, choose target opponent. That player puts this card from its owner’s graveyard onto the battlefield under their control at the beginning of the next end step.”
Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that’s another creature, it gains the following abilities until end of turn.) Deathtouch Whenever this creature deals combat damage to a player or battle, return target creature card from your graveyard to the battlefield.
Buyback—Discard two cards. (You may discard two cards in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.) Search your library for a card, put that card into your hand, then shuffle.
At the beginning of your upkeep, choose one — • Each player with exactly 13 life loses the game, then each player gains 1 life. • Each player with exactly 13 life loses the game, then each player loses 1 life.
Flying Whenever Stinkweed Imp deals combat damage to a creature, destroy that creature. Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)
Flying (This creature can’t be blocked except by creatures with flying or reach.) Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.
Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) If a creature card with flying was exiled with Soulflayer’s delve ability, Soulflayer has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance.
Flying, lifelink, hexproof from planeswalkers Boast — 1B, Sacrifice a creature: Each opponent sacrifices a creature or planeswalker. (Activate this ability only if this creature attacked this turn and only once each turn.)
Return target creature card with converted mana cost 3 or less from your graveyard to the battlefield. Cycling 2 (2, Discard this card: Draw a card.)
As an additional cost to cast this spell, you may exile any number of black cards from your hand. This spell costs 2 less to cast for each card exiled this way. March of Wretched Sorrow deals X damage to target creature or planeswalker and you gain X life.
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) Whenever an opponent casts a spell, put a -1/-1 counter on Ammit Eternal. Whenever Ammit Eternal deals combat damage to a player, remove all -1/-1 counters from it.
As an additional cost to cast this spell, sacrifice two creatures. Draw three cards.
Each opponent sacrifices a creature or planeswalker with the highest converted mana cost among creatures and planeswalkers they control.