You may have Activated Sleeper enter the battlefield as a copy of any creature card in a graveyard that was put there from the battlefield this turn, except it's a Phyrexian in addition to its other types.
0 /
0
{1}{R}{R}
Adamaro, First to Desire
Legendary Creature - Spirit
Adamaro, First to Desire's power and toughness are each equal to the number of cards in the hand of the opponent with the most cards in hand.
* /
*
{R}
Agent of Stromgald
Creature - Human Knight
{R}: Add {B}.
1 /
1
{4}{R}
Alena, Kessig Trapper
Legendary Creature - Human Scout
First strike
{T}: Add an amount of {R} equal to the greatest power among creatures you control that entered the battlefield this turn.
Partner (You can have two commanders if both have partner.)
4 /
3
{6}{R}{R}
Alpha Brawl
Sorcery
Target creature an opponent controls deals damage equal to its power to each other creature that player controls, then each of those creatures deals damage equal to its power to that creature.
{10}
Ancient Stone Idol
Artifact Creature - Golem
Flash
This spell costs {1} less to cast for each attacking creature.
Trample
When Ancient Stone Idol dies, create a 6/12 colorless Construct artifact creature token with trample.
12 /
12
{2}{R}
Arc Runner
Creature - Elemental Ox
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice Arc Runner.
5 /
1
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{6}{B}{B}
Avatar of Woe
Creature - Avatar
If there are ten or more creature cards total in all graveyards, this spell costs {6} less to cast.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
{T}: Destroy target creature. It can't be regenerated.
6 /
5
{7}{R}
Bearer of the Heavens
Creature - Giant
When Bearer of the Heavens dies, destroy all permanents at the beginning of the next end step.
10 /
10
{8}{R}
Blasphemous Act
Sorcery
This spell costs {1} less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.
{8}{B}{B}{R}
Blood for the Blood God!
Instant
This spell costs {1} less to cast for each creature that died this turn.
Discard your hand, then draw eight cards. Blood for the Blood God! deals 8 damage to each opponent. Exile Blood for the Blood God!
{4}{R}
Brash Taunter
Creature - Goblin
Indestructible
Whenever Brash Taunter is dealt damage, it deals that much damage to target opponent.
{2}{R}, {T}: Brash Taunter fights another target creature.
1 /
1
{3}
Burnished Hart
Artifact Creature - Elk
{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.
2 /
2
{5}{R}
Chandra's Incinerator
Creature - Elemental
This spell costs {X} less to cast, where X is the total amount of noncombat damage dealt to your opponents this turn.
Trample
Whenever a source you control deals noncombat damage to an opponent, Chandra's Incinerator deals that much damage to target creature or planeswalker that player controls.
6 /
6
{R}
Cinder Wall
Creature - Wall
Defender
When Cinder Wall blocks, destroy it at end of combat.
3 /
3
{5}{R}{R}{R}
City on Fire
Enchantment
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
If a source you control would deal damage to a permanent or player, it deals triple that damage instead.
{3}
Commander's Sphere
Artifact
{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
{7}{R}
Dance with Calamity
Sorcery
Shuffle your library. As many times as you choose, you may exile the top card of your library. If the total mana value of the cards exiled this way is 13 or less, you may cast any number of spells from among those cards without paying their mana costs.
{B}
Dark Ritual
Instant
Add {B}{B}{B}.
{3}{R}{R}
Dictate of the Twin Gods
Enchantment
Flash
If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.
{4}{B}{B}
Endless Obedience
Sorcery
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Put target creature card from a graveyard onto the battlefield under your control.
{7}{R}
Explosive Welcome
Instant
Explosive Welcome deals 5 damage to any target and 3 damage to any other target. Add {R}{R}{R}.
{4}{B}{B}
Feaster of Fools
Creature - Demon
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Flying
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
3 /
3
{1}{B}{R}
Florian, Voldaren Scion
Legendary Creature - Vampire Noble
First strike
At the beginning of your postcombat main phase, look at the top X cards of your library, where X is the total amount of life your opponents lost this turn. Exile one of those cards and put the rest on the bottom of your library in a random order. You may play the exiled card this turn.
3 /
3
{2}{R}
Glittering Stockpile
Artifact - Treasure
{T}: Add {R}. Put a stash counter on Glittering Stockpile.
{T}, Sacrifice Glittering Stockpile: Add X mana of any one color, where X is the number of stash counters on Glittering Stockpile.
{3}{R}{R}
Heartless Hidetsugu
Legendary Creature - Ogre Shaman
{T}: Heartless Hidetsugu deals damage to each player equal to half that player's life total, rounded down.
4 /
3
{2}{R}{R}
Impetuous Devils
Creature - Devil
Trample, haste
When Impetuous Devils attacks, up to one target creature defending player controls blocks it this combat if able.
At the beginning of the end step, sacrifice Impetuous Devils.
6 /
1
{7}{B}{B}
In Garruk's Wake
Sorcery
Destroy all creatures you don't control and all planeswalkers you don't control.
{3}{B}{B}
Indulgent Tormentor
Creature - Demon
Flying
At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life.
5 /
3
{4}{R}{R}
Inferno Titan
Creature - Giant
{R}: Inferno Titan gets +1/+0 until end of turn.
Whenever Inferno Titan enters the battlefield or attacks, it deals 3 damage divided as you choose among one, two, or three targets.
6 /
6
{2}{B}{R}
Kardur, Doomscourge
Legendary Creature - Demon Berserker
When Kardur, Doomscourge enters the battlefield, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able.
Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life.
4 /
3
{R}
Lightning Berserker
Creature - Human Berserker
{R}: Lightning Berserker gets +1/+0 until end of turn.
Dash {R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)
1 /
1
{2}{B}
Lobelia Sackville-Baggins
Legendary Creature - Halfling Citizen
Flash
Menace
When Lobelia Sackville-Baggins enters the battlefield, exile target creature card from an opponent's graveyard that was put there from the battlefield this turn, then create X Treasure tokens, where X is the exiled card's power.
2 /
3
{R}{R}
Mardu Scout
Creature - Goblin Scout
Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)
3 /
1
{7}{B}{B}
Necropolis Fiend
Creature - Demon
Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Flying
{X}, {T}, Exile X cards from your graveyard: Target creature gets -X/-X until end of turn.
4 /
5
{2}{R}{R}
Neheb, Dreadhorde Champion
Legendary Creature - Zombie Minotaur Warrior
Trample
Whenever Neheb, Dreadhorde Champion deals combat damage to a player or planeswalker, you may discard any number of cards. If you do, draw that many cards and add that much {R}. Until end of turn, you don't lose this mana as steps and phases end.
5 /
4
{3}{R}{R}
Neheb, the Eternal
Legendary Creature - Zombie Minotaur Warrior
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)
At the beginning of your postcombat main phase, add {R} for each 1 life your opponents have lost this turn.
4 /
6
{R}
Norin the Wary
Legendary Creature - Human Warrior
When a player casts a spell or a creature attacks, exile Norin the Wary. Return it to the battlefield under its owner's control at the beginning of the next end step.
2 /
1
{3}{R}
Nova Chaser
Creature - Elemental Warrior
Trample
Champion an Elemental (When this enters the battlefield, sacrifice it unless you exile another Elemental you control. When this leaves the battlefield, that card returns to the battlefield.)
10 /
2
{3}{R}
Paragon of Fierce Defiance
Creature - Human Warrior
Other red creatures you control get +1/+1.
{R}, {T}: Another target red creature you control gains haste until end of turn. (It can attack and {T} this turn.)
2 /
2
{3}{B}
Paragon of Open Graves
Creature - Skeleton Warrior
Other black creatures you control get +1/+1.
{2}{B}, {T}: Another target black creature you control gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)
2 /
2
{B}{R}
Rakdos Charm
Instant
Choose one --
• Exile target player's graveyard.
• Destroy target artifact.
• Each creature deals 1 damage to its controller.
{3}
Rakdos Cluestone
Artifact
{T}: Add {B} or {R}.
{B}{R}, {T}, Sacrifice Rakdos Cluestone: Draw a card.
{3}
Rakdos Keyrune
Artifact
{T}: Add {B} or {R}.
{B}{R}: Rakdos Keyrune becomes a 3/1 black and red Devil artifact creature with first strike until end of turn.
{2}
Rakdos Signet
Artifact
{1}, {T}: Add {B}{R}.
{B}{B}{R}{R}
Rakdos, Lord of Riots
Legendary Creature - Demon
You can't cast this spell unless an opponent lost life this turn.
Flying, trample
Creature spells you cast cost {1} less to cast for each 1 life your opponents have lost this turn.
6 /
6
{2}{B}
Read the Bones
Sorcery
Scry 2, then draw two cards. You lose 2 life.
{R}
Reinforced Ronin
Artifact Creature - Human Samurai
Haste
At the beginning of your end step, return Reinforced Ronin to its owner's hand.
Channel -- {1}{R}, Discard Reinforced Ronin: Draw a card.
2 /
2
{2}{R}
Seething Song
Instant
Add {R}{R}{R}{R}{R}.
{13}{B}{B}
Shadow of Mortality
Creature - Avatar
If your life total is less than your starting life total, this spell costs {X} less to cast, where X is the difference.
7 /
7
{2}{B}
Shakedown Heavy
Creature - Ogre Warrior
Menace
Whenever Shakedown Heavy attacks, defending player may have you draw a card. If they do, untap Shakedown Heavy and remove it from combat.
6 /
4
{R}
Slumbering Dragon
Creature - Dragon
Flying
Slumbering Dragon can't attack or block unless it has five or more +1/+1 counters on it.
Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Slumbering Dragon.
3 /
3
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{4}
Solemn Simulacrum
Artifact Creature - Golem
When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
When Solemn Simulacrum dies, you may draw a card.
2 /
2
{R}
Spark Elemental
Creature - Elemental
Trample, haste (This creature can deal excess combat damage to the player or planeswalker it's attacking. This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice Spark Elemental.
3 /
1
{B}{R}
Terminate
Instant
Destroy target creature. It can't be regenerated.
{10}{B}{B}
The Cauldron of Eternity
Legendary Artifact
This spell costs {2} less to cast for each creature card in your graveyard.
Whenever a creature you control dies, put it on the bottom of its owner's library.
{2}{B}, {T}, Pay 2 life: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.
{3}{R}{R}
Urabrask the Hidden
Legendary Creature - Phyrexian Praetor
Creatures you control have haste.
Creatures your opponents control enter the battlefield tapped.
4 /
4
{R}
Vexing Devil
Creature - Devil
When Vexing Devil enters the battlefield, any opponent may have it deal 4 damage to them. If a player does, sacrifice Vexing Devil.
4 /
3
{1}{B}{R}
Vial Smasher the Fierce
Legendary Creature - Goblin Berserker
Whenever you cast your first spell each turn, choose an opponent at random. Vial Smasher the Fierce deals damage equal to that spell's mana value to that player or a planeswalker that player controls.
Partner (You can have two commanders if both have partner.)
2 /
3
{10}{R}{R}
Volcanic Salvo
Sorcery
This spell costs {X} less to cast, where X is the total power of creatures you control.
Volcanic Salvo deals 6 damage to each of up to two target creatures and/or planeswalkers.