Rakdos the Defiler

Flying, trample
Whenever Rakdos the Defiler attacks, sacrifice half the non-Demon permanents you control, rounded up.
Whenever Rakdos deals combat damage to a player, that player sacrifices half the non-Demon permanents they control of their choice, rounded up.

Might of the Nephilim

Target creature gets +2/+2 until end of turn for each of its colors.

Wrecking Ball

Condemn

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Mountain

Indrik Stomphowler

When Indrik Stomphowler enters, destroy target artifact or enchantment.

Vesper Ghoul

{T}, Pay 1 life: Add one mana of any color.

Rakdos Guildmage

({B/R} can be paid with either {B} or {R}.)
{3}{B}, Discard a card: Target creature gets -2/-2 until end of turn.
{3}{R}: Create a 2/1 red Goblin creature token with haste. Exile it at the beginning of the next end step.

Plumes of Peace

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
Forecast — {W}{U}, Reveal Plumes of Peace from your hand: Tap target creature. (Activate only during your upkeep and only once each turn.)

Nettling Curse

Enchant creature
Whenever enchanted creature attacks or blocks, its controller loses 3 life.
{1}{R}: Enchanted creature attacks this turn if able.

Kill-Suit Cultist

Kill-Suit Cultist attacks each combat if able.
{B}, Sacrifice Kill-Suit Cultist: The next time damage would be dealt to target creature this turn, destroy that creature instead.

Sporeback Troll

Graft 2 (This creature enters with two +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)
{1}{G}: Regenerate target creature with a +1/+1 counter on it.

Fall

Target player reveals two cards at random from their hand, then discards each nonland card revealed this way.

Rise

Return target creature card from a graveyard and target creature on the battlefield to their owners' hands.

Rise // Fall

Enemy of the Guildpact

Jagged Poppet

Whenever Jagged Poppet is dealt damage, discard that many cards.
Hellbent — Whenever Jagged Poppet deals combat damage to a player, if you have no cards in hand, that player discards cards equal to the damage.

Flame-Kin War Scout

When another creature enters, sacrifice Flame-Kin War Scout. If you do, Flame-Kin War Scout deals 4 damage to that creature.

Crypt Champion

Double strike
When Crypt Champion enters, each player puts a creature card with mana value 3 or less from their graveyard onto the battlefield.
When Crypt Champion enters, sacrifice it unless {R} was spent to cast it.

Psychotic Fury

Target multicolored creature gains double strike until end of turn.
Draw a card.

Overrule

Counter target spell unless its controller pays {X}. You gain X life.

Ratcatcher

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
At the beginning of your upkeep, you may search your library for a Rat card, reveal it, put it into your hand, then shuffle.

Bond of Agony

As an additional cost to cast this spell, pay X life.
Each other player loses X life.

Seal of Fire

Sacrifice Seal of Fire: It deals 2 damage to any target.

Swamp

Vigean Graftmage

Graft 2 (This creature enters with two +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)
{1}{U}: Untap target creature with a +1/+1 counter on it.

Error

Trial

Return all creatures blocking or blocked by target creature to their owner's hand.

Trial // Error

Lyzolda, the Blood Witch

{2}, Sacrifice a creature: Lyzolda, the Blood Witch deals 2 damage to any target if the sacrificed creature was red. Draw a card if the sacrificed creature was black.

Seal of Doom

Sacrifice Seal of Doom: Destroy target nonblack creature. It can't be regenerated.

Delirium Skeins

Rakdos Augermage

First strike
{T}: Reveal your hand and discard a card of target opponent's choice. Then that player reveals their hand and discards a card of your choice. Activate only as a sorcery.

Squealing Devil

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When Squealing Devil enters, you may pay {X}. If you do, target creature gets +X/+0 until end of turn.
When Squealing Devil enters, sacrifice it unless {B} was spent to cast it.

Stoic Ephemera

Defender (This creature can't attack.)
Flying
When Stoic Ephemera blocks, sacrifice it at end of combat.

Ocular Halo

Enchant creature
Enchanted creature has "{T}: Draw a card."
{W}: Enchanted creature gains vigilance until end of turn.

Sandstorm Eidolon

{R}, Sacrifice Sandstorm Eidolon: Target creature can't block this turn.
Whenever you cast a multicolored spell, you may return Sandstorm Eidolon from your graveyard to your hand.

Rakdos Ickspitter

{T}: Rakdos Ickspitter deals 1 damage to target creature and that creature's controller loses 1 life.