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

({2/B} can be paid with any two mana or with {B}. This card's mana value is 6.)

Search your library for a card with mana value less than or equal to the number of lands you control, reveal it, put it into your hand, then shuffle.

({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.

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

{2}, {T}: Add {B} for each Swamp you control.

{T}: Add {C}.

{3}, {T}: Add {B} for each basic Swamp you control.

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

Canyon Slough enters the battlefield tapped.

Cycling {2} ({2}, Discard this card: Draw a card.)

As Conspiracy enters the battlefield, choose a creature type.

Creatures you control are the chosen type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Double strike

When Crypt Champion enters the battlefield, each player puts a creature card with mana value 3 or less from their graveyard onto the battlefield.

When Crypt Champion enters the battlefield, sacrifice it unless {R} was spent to cast it.

Exile the top thirteen cards of your library, then search your library for a card. Put that card into your hand, then shuffle.

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

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Sacrifice a creature: Regenerate Dimir House Guard.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Double strike

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Double strike

Whenever Efreet Flamepainter deals combat damage to a player, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

Double strike

When Fury enters the battlefield, it deals 4 damage divided as you choose among any number of target creatures and/or planeswalkers.

Evoke--Exile a red card from your hand.

All Sliver creatures have double strike.

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

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Commander creatures you own have "Whenever this creature becomes tapped, it and other creatures you control that share a creature type with it each get +2/+0 and gain undying until end of turn." (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Creatures you control are Slivers in addition to their other creature types.

Double strike

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Whenever you attack, if it's the first combat phase of the turn, untap all attacking creatures. They gain first strike until end of turn. After this phase, there is an additional combat phase.

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

Double strike

Equipped creature has double strike.

Reconfigure {2} ({2}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Double strike

Whenever Markov Blademaster deals combat damage to a player, put a +1/+1 counter on it.

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

{3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)

Flying

Each creature you control is a Vampire in addition to its other creature types and has "Whenever this creature deals damage to a creature, put a +1/+1 counter on this creature."

{T}: Add {C}.

{1}, {T}, Sacrifice Mind Stone: Draw a card.

Whenever Momentum Rumbler attacks, if it doesn't have first strike, put a first strike counter on it.

Whenever Momentum Rumbler attacks, if it has first strike, it gains double strike until end of turn.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

When Netherborn Phalanx enters the battlefield, each opponent loses 1 life for each creature they control.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then then shuffle. Transmute only as a sorcery.)

{T}, Pay 1 life, Sacrifice Prismatic Vista: Search your library for a basic land card, put it onto the battlefield, then shuffle.

Suspend 2--{1}{B} (Rather than cast this card from your hand, pay {1}{B} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

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

Double strike, trample

Whenever Prophetic Flamespeaker deals combat damage to a player, exile the top card of your library. You may play it this turn.

Double strike

{1}, {T}: Add {B}{R}.

Double strike (This creature deals both first-strike and regular combat damage.)

First strike

Delirium -- Scourge Wolf has double strike as long as there are four or more card types among cards in your graveyard.

Double strike (This creature deals both first-strike and regular combat damage.)

When Scrapper Champion enters the battlefield, you get {E}{E} (two energy counters).

Whenever Scrapper Champion attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it.

Exile up to four target cards from a single graveyard.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Deathtouch

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Sidisi, Undead Vizier exploits a creature, you may search your library for a card, put it into your hand, then shuffle.

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

Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands.

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

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

Storm Fleet Swashbuckler has double strike as long as you have the city's blessing.

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

Sulfurous Mire enters the battlefield tapped.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

{T}: Add {C}.

{T}: Add {B} or {R}. Talisman of Indulgence deals 1 damage to you.

Double strike

Double strike (This creature deals both first-strike and regular combat damage.)

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

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Double strike

Whenever Warren Instigator deals damage to an opponent, you may put a Goblin creature card from your hand onto the battlefield.

({T}: Add {B}.)

Witch's Cottage enters the battlefield tapped unless you control three or more other Swamps.

When Witch's Cottage enters the battlefield untapped, you may put target creature card from your graveyard on top of your library.

Double strike

Bloodrush -- {3}{R}{R}, Discard Wrecking Ogre: Target attacking creature gets +3/+3 and gains double strike until end of turn.