Fulminator Mage

Sacrifice this creature: Destroy target nonbasic land.

Ashenmoor Gouger

Cultbrand Cinder

When this creature enters, put a -1/-1 counter on target creature.

Spiteflame Witch

Manaforge Cinder

{1}: Add {B} or {R}. Activate no more than three times each turn.

Sootstoke Kindler

Haste
{T}: Target black or red creature gains haste until end of turn.

Sootwalkers

This creature can't be blocked by white creatures.

Ashen Reaper

Menace
At the beginning of your end step, put a +1/+1 counter on this creature if a permanent was put into a graveyard from the battlefield this turn.

Invasion of Azgol

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, target player sacrifices a creature or planeswalker of their choice and loses 1 life.

Invasion of Azgol // Ashen Reaper

Ashenmoor Liege

Other black creatures you control get +1/+1.
Other red creatures you control get +1/+1.
Whenever this creature becomes the target of a spell or ability an opponent controls, that player loses 4 life.

Blazing Hellhound

{1}, Sacrifice another creature: This creature deals 1 damage to any target.

Lightning Skelemental

Trample, haste
Whenever this creature deals combat damage to a player, that player discards two cards.
At the beginning of the end step, sacrifice this creature.

Rakdos Ragemutt

Igneous Pouncer

Haste
Swampcycling {2}, mountaincycling {2} ({2}, Discard this card: Search your library for a Swamp or Mountain card, reveal it, put it into your hand, then shuffle.)

Kulrath Knight

Flying
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Creatures your opponents control with counters on them can't attack or block.

Emberstrike Duo

Whenever you cast a black spell, this creature gets +1/+1 until end of turn.
Whenever you cast a red spell, this creature gains first strike until end of turn.