As long as your devotion to white and black is less than seven, Athreos isn't a creature.
Whenever another creature you own dies, return it to your hand unless target opponent pays 3 life.
5 /
4
{1}{B}
Blood Artist
Creature - Vampire
Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.
0 /
1
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{1}{B}
Doomed Dissenter
Creature - Human
When Doomed Dissenter dies, create a 2/2 black Zombie creature token.
1 /
1
{W}
Doomed Traveler
Creature - Human Soldier
When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.
1 /
1
{2}{W}{B}
Elenda, the Dusk Rose
Legendary Creature - Vampire Knight
Lifelink
Whenever another creature dies, put a +1/+1 counter on Elenda, the Dusk Rose.
When Elenda dies, create X 1/1 white Vampire creature tokens with lifelink, where X is Elenda's power.
1 /
1
{2}{B}
Grim Haruspex
Creature - Human Wizard
Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Whenever another nontoken creature you control dies, draw a card.
3 /
2
{1}{W}{W}
Hallowed Spiritkeeper
Creature - Avatar
Vigilance
When Hallowed Spiritkeeper dies, create X 1/1 white Spirit creature tokens with flying, where X is the number of creature cards in your graveyard.
3 /
2
{W}
Hunted Witness
Creature - Human
When Hunted Witness dies, create a 1/1 white Soldier creature token with lifelink.
1 /
1
{W}{B}
Imperious Oligarch
Creature - Human Cleric
Vigilance
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)
2 /
1
{2}{W}
Mentor of the Meek
Creature - Human Soldier
Whenever another creature with power 2 or less enters the battlefield under your control, you may pay {1}. If you do, draw a card.
2 /
2
{2}{B}
Midnight Reaper
Creature - Zombie Knight
Whenever a nontoken creature you control dies, Midnight Reaper deals 1 damage to you and you draw a card.
3 /
2
{2}{W}
Ministrant of Obligation
Creature - Human Cleric
Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)
2 /
1
{1}{W}{B}
Mortify
Instant
Destroy target creature or enchantment.
{1}{B}
Orzhov Enforcer
Creature - Human Rogue
Deathtouch
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)
1 /
2
{1}{B}
Priest of Forgotten Gods
Creature - Human Cleric
{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature. You add {B}{B} and draw a card.
1 /
2
{2}{W}{B}
Seraph of the Scales
Creature - Angel
Flying
{W}: Seraph of the Scales gains vigilance until end of turn.
{B}: Seraph of the Scales gains deathtouch until end of turn.
Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)
4 /
3
{1}
Skullclamp
Artifact - Equipment
Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip {1}
{2}{W}{B}
Teysa Karlov
Legendary Creature - Human Advisor
If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Creature tokens you control have vigilance and lifelink.
2 /
4
{1}{W}{B}
Teysa, Orzhov Scion
Legendary Creature - Human Advisor
Sacrifice three white creatures: Exile target creature.
Whenever another black creature you control dies, create a 1/1 white Spirit creature token with flying.
2 /
3
{1}{W}
Tithe Taker
Creature - Human Soldier
During your turn, spells your opponents cast cost {1} more to cast and abilities your opponents activate cost {1} more to activate unless they're mana abilities.
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)
2 /
1
{2}{W}
Twilight Drover
Creature - Spirit
Whenever a creature token leaves the battlefield, put a +1/+1 counter on Twilight Drover.
{2}{W}, Remove a +1/+1 counter from Twilight Drover: Create two 1/1 white Spirit creature tokens with flying.
1 /
1
{3}{B}
Vindictive Lich
Creature - Zombie Wizard
When Vindictive Lich dies, choose one or more. Each mode must target a different player.
• Target opponent sacrifices a creature.
• Target opponent discards two cards.
• Target opponent loses 5 life.
4 /
1
{6}
Wurmcoil Engine
Artifact Creature - Phyrexian Wurm
Deathtouch, lifelink
When Wurmcoil Engine dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.
6 /
6
{1}{B}
Zulaport Cutthroat
Creature - Human Rogue Ally
Whenever Zulaport Cutthroat or another creature you control dies, each opponent loses 1 life and you gain 1 life.