Whenever you attack, up to one target attacking creature can't be blocked this turn. Return that creature to its owner's hand at the beginning of the next end step. Choose a Background (You can have a Background as a second commander.)

Draw three cards, then discard a card.

Target player draws two cards. Flashback—{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{1}, {T}, Pay 1 life: Draw a card. Activate only if you've discarded a card this turn.

Flying Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, draw three cards.

Draw three cards. Islandcycling {1} ({1}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Draw three cards, then discard a card.

Each other player discards a card. You draw a card for each card discarded this way.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Draw three cards.

When this creature enters, look at the top three cards of target player's library, then put them back in any order. Cycling {U/B} ({U/B}, Discard this card: Draw a card.)

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Sacrifice a creature: Regenerate this creature. 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.)

This creature can't be blocked. Transmute {1}{U}{B} ({1}{U}{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.)

Defender (This creature can't attack.) Flying Transmute {1}{U}{U} ({1}{U}{U}, 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.)

Swampcycling {2} ({2}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.) Backup 2 (When this creature enters, put two +1/+1 counters on target creature. If that's another creature, it gains the following ability until end of turn.) Menace

Whenever you cycle or discard another card, this creature gets +2/+1 until end of turn. Cycling {B} ({B}, Discard this card: Draw a card.)

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

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Flying When this creature enters, draw two cards. Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

When this creature enters, target creature you control gets +2/+0 and gains indestructible until end of turn. Swampcycling {2} ({2}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

This creature can't attack unless there are five or more cards in your graveyard. Cycling {U} ({U}, Discard this card: Draw a card.)

Affinity for artifacts Artifact landcycling {2} ({2}, Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) Cycling—Pay 2 life. (Pay 2 life, Discard this card: Draw a card.)

Hexproof (This creature can't be the target of spells or abilities your opponents control.) Cycling {U} ({U}, Discard this card: Draw a card.)

This creature can't be blocked except by three or more creatures. Swampcycling {1} ({1}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

{T}: Untap another target permanent. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.) When you cycle this card, untap target permanent.

When this creature enters, each player sacrifices a nontoken creature of their choice.

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, destroy target creature that player controls.

{T}, Sacrifice a creature: Target creature gets +2/+2 until end of turn. {1}{U}{U}, Sacrifice a creature: Counter target creature spell.

Animate Chains — When this creature enters, each player sacrifices a nontoken creature of their choice.

Counter target spell.

{X}: This creature deals X damage to each creature and each player. Spend only black mana on X.

Destroy target nonblack creature. Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When this creature enters, each player sacrifices a creature or planeswalker of their choice.

All creatures get -2/-2 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

When this creature enters, each player sacrifices a creature of their choice.

Destroy target nonblack creature if its toughness is less than or equal to the number of cards in your graveyard.

Destroy target nonartifact creature.

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) Channel — {2}{U}, Discard this card: Counter target spell or ability unless its controller pays {3}.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment. {B}: This enchantment deals 1 damage to each creature and each player.

Exploit (When this creature enters, you may sacrifice a creature.) When this creature exploits a creature, return target creature to its owner's hand.

When this creature enters, each player sacrifices a creature of their choice.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost. Destroy target nonblack creature. It can't be regenerated.

Flash Enchant creature Enchanted creature loses all abilities and has base power and toughness 1/1. {2}{C}: Exile enchanted creature.

{U}, {T}, Discard a card: Return target creature to its owner's hand.

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

{T}: Add {U}.

({T}: Add {U}.)

({T}: Add {B}.)

{T}: Add {B}.

Flying {T}: Add one mana of any color.

{1}, {T}: Draw a card, then discard a card.

{1}, {T}: Draw a card, then discard a card.

{1}, {T}: Draw a card, then discard a card.

Draw two cards, then discard two cards. Untap up to three lands.

{T}, Discard a nonblack card: Draw a card. {T}, Discard a black card: Draw two cards, then discard one of them.

Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever this creature deals damage to an opponent, draw a card, then discard a card.

{T}: Draw a card, then discard a card.

Flying {S}, {T}: Draw a card, then discard a card. ({S} can be paid with one mana from a snow source.)

{T}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Threshold — As long as seven or more cards are in your graveyard, this creature has "When this creature enters, draw three cards, then discard two cards."

Defender {T}: Creatures you control gain haste until end of turn.

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Flying Whenever this creature deals combat damage to a creature, destroy that creature. Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)

({S} can be paid with one mana from a snow source.) When this artifact enters, draw a card. {1}, {T}: Add one mana of any color.

Equipped creature has flying and haste. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Equipped creature has vigilance, trample, and haste. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As an additional cost to cast this spell, discard X creature cards. Return X target creatures to their owners' hands.

Flying Sacrifice this creature: Return up to two target creatures to their owners' hands. Activate only during your upkeep.

Enchant creature an opponent controls Whenever enchanted creature becomes tapped, you draw a card.

{B}, Pay 1 life: Add one mana of any color.

Sacrifice this creature: Add {B}.

{B}, {T}, Discard a card: Add {B}{B}{B}.

As an additional cost to cast this spell, sacrifice a creature or discard a card. Destroy target creature or planeswalker.

Draw three cards, then put two cards from your hand on top of your library in any order.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

When this creature enters, each opponent discards a card.

Add {B}{B}{B}. Threshold — Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.

Draw two cards, then discard two cards.

This creature can't block. Sacrifice a creature: Put a +1/+1 counter on this creature.

Enchant land Whenever enchanted land becomes tapped, its controller mills three cards.

Flying When this creature enters, untap up to two lands. Cycling {2} ({2}, Discard this card: Draw a card.)

Target player draws three cards. Then that player discards two cards unless they discard a land card.

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Flying Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

As an additional cost to cast this spell, sacrifice a creature. Add {B}{B}{B}{B}.

Whenever you cycle or discard a card, this creature gets +1/+0 until end of turn and can't be blocked this turn.

Each player returns a creature they control to its owner's hand.

Add {B}{B}{B}.

You may put target creature card from your graveyard on top of your library. If you do, Dead Reckoning deals damage equal to that card's power to target creature.

Return X target creature cards from your graveyard to your hand.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Destroy target nongreen creature. It can't be regenerated.

As an additional cost to cast this spell, return a land you control to its owner's hand. Counter target spell.

Enchant creature Shroud (A permanent with shroud can't be the target of spells or abilities.) Enchanted creature has shroud.

Target creature gets -3/-0 until end of turn. Transmute {1}{U}{U} ({1}{U}{U}, 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.)

Whenever a player casts a blue spell, you may pay {1}. If you do, target player mills two cards.