Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield with a +1/+1 counter on it.)
Trample
Snarling Demon can't block.
Whenever Snarling Demon attacks, put a +1/+1 counter on Snarling Demon.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield with a +1/+1 counter on it.)
Reach
Whenever a creature you control dies, put a +1/+1 counter on Watchful Arachnotron.
Target creature you control fights target creature you don't control.
Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Put a +1/+1 counter on target creature you control.
If a creature died this turn, put three +1/+1 counters on target creature you control instead.
Create two 1/1 black and green Demon creature tokens. (The eggs hatch hungry.)
As an additional cost to cast this spell, sacrifice a creature.
Put three +1/+1 counters on target creature you control. You gain 2 life.
Put a +1/+1 counter on each creature you control.
Target creature you control gains hexproof and indestructible until end of turn.
When Brood Whelp dies, put a +1/+1 counter on target creature you control.
When Cavern Stalker enters, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Cavern Stalker can't be blocked by more than one creature.
Reach
When Nest Guardian enters, put a +1/+1 counter on another target Demon you control.
Other Demon creatures you control get +0/+2.
When Sporeback Demon enters, you gain 3 life.
Trample
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield with a +1/+1 counter on it.)
Return target creature card from your graveyard to your hand. You gain 2 life.
Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.
Target creature gets +2/+2 and gains first strike until end of turn.
Create X 1/1 black and green Demon creature tokens.
Draw a card. Put a +1/+1 counter on target creature you control.
Flying, haste
Phantom Soul attacks each combat if able.
Phantom Soul can't block.
Flying, deathtouch
Menace
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield with a +1/+1 counter on it.)
When Carrion Mancubus dies, each opponent loses 2 life. (It goes off like a fuel dump.)
Flying
At the beginning of your end step, create two 1/1 black Spirit creature tokens with flying and haste named Phantom Soul.
Target creature gets -4/-4 until end of turn.
If a creature died this turn, put two +1/+1 counters on target creature you control.
Destroy target creature. Its controller gains 2 life. (The laser unmakes flesh, not memory.)
As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.
At the beginning of your end step, if a creature died this turn, each opponent loses 2 life.
Return up to two target Demon cards from your graveyard to the battlefield tapped.
At the beginning of your end step, return up to one target creature card with mana value 2 or less from your graveyard to your hand.
Each opponent sacrifices a creature of their choice. You gain 2 life for each creature sacrificed this way.
Deathtouch
Flying
Citadel Wraith can't block.
When Brood Carrier dies, create a 1/1 black and green Demon creature token.
Menace
Destroy target creature with power 2 or less. (The dart traps aim low.)
Destroy target tapped creature.
Toxic Haze deals 3 damage to each creature you don't control. (The brood breathes it like air.)
Destroy all creatures with mana value 3 or less.
Hunger of the Brood deals 2 damage to each opponent and you gain 2 life.
You draw two cards and you lose 2 life.
Return up to two target Demon cards from your graveyard to your hand. You gain 2 life.
If a creature died this turn, create a 1/1 black and green Demon creature token.
Draw a card. If a creature died this turn, draw two cards instead.
Destroy target creature. (The lights fail. The screaming doesn't.)
Target creature you control gains hexproof and can't be blocked this turn.
Flying
Other Demon creatures you control get +1/+1.
At the beginning of your end step, return up to one target Demon card with mana value 4 or less from your graveyard to the battlefield with a +1/+1 counter on it.
Whenever another Demon you control dies, put a +1/+1 counter on Mother Demon.
Return all creature cards with mana value 4 or less from your graveyard to the battlefield.
If a creature died this turn, put a +1/+1 counter on each creature you control.
Destroy target creature. If it was a Demon, its controller loses 2 life.
Creatures you control get +2/+1 until end of turn.
If a creature died this turn, put a +1/+1 counter on each creature you control.
Whenever a nontoken creature you control dies, you gain 1 life and draw a card. (Everything here is a draft of something worse.)
When Mother's Chosen enters, if a creature died this turn, draw a card and you gain 2 life.
Exile target creature.
If a creature died this turn, put two +1/+1 counters on target creature you control.
Equipped creature gets +2/+0 and has deathtouch.
Whenever equipped creature attacks, this Equipment deals 3 damage to target creature defending player controls.
Equip
: Add or .
Equip abilities you activate cost less.
Whenever a creature you control dies, put a +1/+1 counter on target creature you control.
: Add or .
Equip abilities you activate cost less.
, Sacrifice Demon Key of Shadow: Return target Demon card from your graveyard to the battlefield tapped.
: Add or .
, Sacrifice Demon Key of Ruin: Draw a card.
Equipped creature gets +2/+0.
Whenever equipped creature deals combat damage to a creature, put a +1/+1 counter on equipped creature.
Equip
: Add 
.
, , Sacrifice Urn of Souls: Return target Demon card from your graveyard to your hand.
: Add or .
When Signal Scrambler enters, scry 2.
: Add two mana in any combination of and/or .
, Sacrifice Focusing Array: Target creature gets +1/+0 and gains deathtouch until end of turn.
, Sacrifice Data Crypt: Draw a card.
, Sacrifice Warding Idol: Prevent all damage that would be dealt to you and permanents you control this turn.
Staging Area enters tapped.
: Add or .
Holding Area enters tapped unless you control a Demon.
: Add or .
: Add .
, : Add or .
: Add .
, , Sacrifice Even Simpler: Create a 1/1 black and green Demon creature token.
Dark Entries enters tapped.
: Add or .
When Dark Entries enters, scry 1.
No Escape enters tapped unless an opponent lost life this turn.
: Add or .
In the Void enters tapped.
: Add or .
, , Sacrifice In the Void: Return target Demon card from your graveyard to your hand.
The Dark Citadel enters tapped.
: Add or .
, : Put a +1/+1 counter on each Demon you control.
Outpost Omega enters tapped.
: Add or .
: Add .
, : Add or .
Hectic enters tapped.
: Add or .
, , Sacrifice Hectic: Destroy target creature with power 2 or less.
