As Adaptive Automaton enters the battlefield, choose a creature type.

Adaptive Automaton is the chosen type in addition to its other types.

Other creatures you control of the chosen type get +1/+1.

{T}: Add one mana of any color in your commander's color identity.

Sacrifice a creature: Add {C}{C}.

{2}{B}: Regenerate Asphodel Wanderer.

{1}{B}: Regenerate Augur of Skulls.

Sacrifice Augur of Skulls: Target player discards two cards. Activate only during your upkeep.

({T}: Add {B} or {R}.)

({T}: Add {B} or {G}.)

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Flying, haste

Whenever Bladewing, Deathless Tyrant deals combat damage to a player or planeswalker, for each creature card in your graveyard, create a 2/2 black Zombie Knight creature token with menace.

({T}: Add {B} or {R}.)

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

As an additional cost to cast this spell, sacrifice a creature.

Return a creature card from your graveyard to the battlefield, then return another creature card from your graveyard to your hand.

Bojuka Bog enters the battlefield tapped.

When Bojuka Bog enters the battlefield, exile target player's graveyard.

{T}: Add {B}.

Flying

{3}{B}{B}, Exile seven other cards from your graveyard: Return Bone Dragon from your graveyard to the battlefield tapped.

Whenever a creature blocks, that creature's controller loses 1 life.

{1}{B}{R}: Regenerate Carnage Gladiator.

As Cavern of Souls enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

{3}{B}{B}, {T}, Sacrifice X other creatures: Return X target creature cards from your graveyard to the battlefield.

{5}{B}{B}: Put Champion of Stray Souls on top of your library from your graveyard.

Clattering Augur can't block.

When Clattering Augur enters the battlefield, you draw a card and you lose 1 life.

{2}{B}{B}: Return Clattering Augur from your graveyard to your hand.

Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it. (For example, if two Goblin Warriors and a Goblin Shaman are on the battlefield, each gets +2/+2.)

{T}: Add one mana of any color in your commander's color identity.

Dynastic Command Node -- As long as you control your commander, activated abilities of cards in your graveyard cost {2} less to activate. This effect can't reduce the mana in that ability's activation cost to less than one mana.

Translocation Protocols -- {3}, {T}: Mill three cards.

Skeletons you control get +1/+0 and have haste.

When Corpses of the Lost enters the battlefield, create a 2/2 black Skeleton Pirate creature token.

At the beginning of your end step, if you descended this turn, you may pay 1 life. If you do, return Corpses of the Lost to its owner's hand. (You descended if a permanent card was put into your graveyard from anywhere.)

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Skeletons you control and other Zombies you control get +1/+1 and have deathtouch.

Menace

Negative Energy Cone -- Whenever an attacking creature you control or a blocking creature an opponent controls dies, create a 2/2 black Zombie creature token.

{5}{B}: Return Death Tyrant from your graveyard to the battlefield tapped.

Skeletons, Vampires, and Zombies you control get +1/+1.

At the beginning of your end step, if a creature died this turn, you may pay {1}. If you do, create a 1/1 black Skeleton creature token.

Haste

When you gain life for the first time each turn, return Deathless Knight from your graveyard to your hand.

Search your library for a card, put that card into your hand, then shuffle.

As an additional cost to cast this spell, sacrifice a creature.

Search your library for a card, put that card into your hand, then shuffle.

{B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

{3}{B}: Regenerate Duty-Bound Dead. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Creatures you control get +1/+1 and have flying and indestructible.

At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice Eldrazi Monument.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Whenever Flayed Nim deals combat damage to a creature, that creature's controller loses that much life.

{2}{B}: Regenerate Flayed Nim.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

When Ghastly Death Tyrant enters the battlefield, choose one --

• Disintegration Ray -- Destroy target enchantment an opponent controls. You lose life equal to its mana value.

• Death Ray -- Creatures you control gain deathtouch until end of turn.

Golgari Grave-Troll enters the battlefield with a +1/+1 counter on it for each creature card in your graveyard.

{1}, Remove a +1/+1 counter from Golgari Grave-Troll: Regenerate Golgari Grave-Troll.

Dredge 6 (If you would draw a card, you may mill six cards instead. If you do, return this card from your graveyard to your hand.)

Whenever a creature you control dies, each other player sacrifices a creature.

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.

Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

{1}{B}: Regenerate Grim Roustabout.

Whenever you attack, you may sacrifice another creature or an artifact. If you do, create a 4/1 black Skeleton creature token with menace that's tapped and attacking. (It can't be blocked except by two or more creatures.)

Choose a Background (You can have a Background as a second commander.)

Gutterbones enters the battlefield tapped.

{1}{B}: Return Gutterbones from your graveyard to your hand. Activate only during your turn and only if an opponent lost life this turn.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Trample, haste

Whenever Lightning Skelemental deals combat damage to a player, that player discards two cards.

At the beginning of the end step, sacrifice Lightning Skelemental.

First strike

{1}{B}: Regenerate Lim-Dûl's High Guard.

Whenever another creature you control dies, you get an experience counter.

At the beginning of your end step, choose target creature card in your graveyard. If that card's mana value is less than or equal to the number of experience counters you have, return it to the battlefield. Otherwise, put it into your hand.

As Metallic Mimic enters the battlefield, choose a creature type.

Metallic Mimic is the chosen type in addition to its other types.

Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.

Whenever a creature you control dies, you gain 1 life and draw a card.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

{T}: Add {G}.

{G}, {T}: Target legendary creature gets +1/+1 until end of turn.

({T}: Add {B} or {G}.)

As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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}{B}: Return Persistent Specimen from your graveyard to the battlefield tapped.

At the beginning of your upkeep, you draw a card and you lose 1 life.

{B}: Regenerate Phyrexian Monitor.

{T}: Add {C}.

{T}, Sacrifice a creature: Add {B}{B}.

Destroy all creatures you don't control. They can't be regenerated.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

{1}{B}: Return Reassembling Skeleton from your graveyard to the battlefield tapped.

You have no maximum hand size.

{T}: Add {C}.

{B}: Regenerate Restless Dead.

Rot Farm Skeleton can't block.

{2}{B}{G}, Mill four cards: Return Rot Farm Skeleton from your graveyard to the battlefield. Activate only as a sorcery.

{2}{B}: Return Sanitarium Skeleton from your graveyard to your hand.

As Secluded Courtyard enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type or activate an ability of a creature or creature card of the chosen type.

Whenever another nontoken creature you control dies, create a 3/1 black and red Graveborn creature token with haste.

Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

{T}: Add {R}.

{R}, {T}: Target legendary creature gains first strike until end of turn.

{T}: Add {B}.

{B}, {T}: Target legendary creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Each Skeleton you control has trample, attacks each combat if able, and gets +X/+0, where X is the number of other Skeletons you control.

At the beginning of your end step, create a tapped 1/1 black Skeleton creature token. If a creature died this turn, create two of those tokens instead.

Flying

When Skeletal Vampire enters the battlefield, create two 1/1 black Bat creature tokens with flying.

{3}{B}{B}, Sacrifice a Bat: Create two 1/1 black Bat creature tokens with flying.

Sacrifice a Bat: Regenerate Skeletal Vampire.

Each other creature you control that's a Skeleton or Pirate gets +1/+1.

Whenever one or more creature cards leave your graveyard, create a 2/2 black Skeleton Pirate creature token. (This ability triggers only from the battlefield.)

{5}{B}: Return Skeleton Crew from your graveyard to the battlefield tapped.

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{B}: Skithiryx, the Blight Dragon gains haste until end of turn.

{B}{B}: Regenerate Skithiryx.

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip {1}

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.

{T}: Add {C}{C}.

Spawning Pool enters the battlefield tapped.

{T}: Add {B}.

{1}{B}: Spawning Pool becomes a 1/1 black Skeleton creature with "{B}: Regenerate this creature" until end of turn. It's still a land. (If it regenerates, the next time it would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

({T}: Add {R} or {G}.)

As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {R} or {G}.)

When Tenacious Dead dies, you may pay {1}{B}. If you do, return it to the battlefield tapped under its owner's control.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

{B}: Regenerate Unworthy Dead.

Kicker {3} (You may pay an additional {3} as you cast this spell.)

{B}: Regenerate Urborg Skeleton.

If Urborg Skeleton was kicked, it enters the battlefield with a +1/+1 counter on it.

Each land is a Swamp in addition to its other land types.

As Vanquisher's Banner enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +1/+1.

Whenever you cast a creature spell of the chosen type, draw a card.

As an additional cost to cast this spell, sacrifice a creature.

Draw two cards.

Creatures you control have lifelink.

{2}{B}{B}, {T}: Return target creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step. If it would leave the battlefield, exile it instead of putting it anywhere else. Activate only as a sorcery.

Each land is a Forest in addition to its other land types.

({T}: Add {B}, {R}, or {G}.)

Ziatora's Proving Ground enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)