Commander creatures you own have "{1}, Sacrifice another creature or an artifact: This creature deals 1 damage to any target."

If an opponent would mill one or more cards, they mill twice that many cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)

Casualty 2 (As you cast this spell, you may sacrifice a creature with power 2 or greater. When you do, copy this spell and you may choose a new target for the copy.) Target player mills half their library, rounded down.

Kicker {3}{U} Each opponent mills eight cards. If this spell was kicked, instead each opponent mills half their library, rounded up.

Whenever this creature attacks, defending player mills half their library, rounded up. Unearth {1}{U}{U}{U} ({1}{U}{U}{U}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)

Replicate—Tap an untapped Horror you control. (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.) Exile target instant or sorcery card from a graveyard and copy it. You may cast the copy without paying its mana cost. Exile Psionic Ritual.

Exile target nonland card in a graveyard that was put there from anywhere this turn. Copy it. You may cast the copy without paying its mana cost.

Offspring {1}{R} (You may pay an additional {1}{R} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Whenever another creature you control enters, this creature deals 1 damage to each opponent.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Whenever another creature you control enters, this creature deals 1 damage to each opponent. Unearth {R} ({R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card.

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

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

Whenever an opponent casts a green spell, you draw a card.

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

At the beginning of your end step, put an influence counter on Palantír of Orthanc and scry 2. Then target opponent may have you draw a card. If that player doesn't, you mill X cards, where X is the number of influence counters on Palantír of Orthanc, and that player loses life equal to the total mana value of those cards.

{T}: Add one mana of any color.

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

At the beginning of your upkeep, put two descent counters on this enchantment. Then each player creates X Treasure tokens and this enchantment deals X damage to each player, where X is the number of descent counters on this enchantment.

Instant and sorcery spells you cast cost {1} less to cast.

Whenever a creature enters, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it.

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

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) {T}, Pay 2 life: Add one mana of any color.

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

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {T}: Add {C}.

Blue spells you cast cost {1} less to cast.

{T}: Add {U}.

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

If a creature you control would deal damage to a permanent or player, it deals double that damage instead.

Creatures don't untap during their controllers' untap steps. Whenever a creature enters, untap all creatures.

Creatures you control with power or toughness 1 or less can't be blocked.

When this creature enters, you may search your library for an artifact card with mana value 2, reveal that card, put it into your hand, then shuffle.

{T}: Add {C}. {2}, {T}, Sacrifice this land: Return target artifact card from your graveyard to your hand.

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

{T}: Add {C}. {1}{U}{R}, {T}: Draw a card, then discard a card.

{T}: Add {C}. {1}, {T}, Sacrifice this land: You may cast spells this turn as though they had flash.

This land enters tapped. When this land enters, it deals 1 damage to target opponent. {T}: Add {U} or {R}.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add one mana of any color that a land an opponent controls could produce.

({T}: Add {U}.)

({T}: Add {U}.) This land enters tapped. {U}, {T}: Look at the top card of target player's library. Activate only if you control two or more blue permanents.

({T}: Add {R}.)

({T}: Add {U}.) This land enters tapped unless you control three or more other Islands. When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.

This land enters tapped. {T}: Add {U} or {R}. {U}{R}: Until end of turn, this land becomes a 2/1 blue and red Elemental creature with "During your turn, this creature has first strike." It's still a land. Whenever this land attacks, scry 1.

{T}: Add {C}. {1}, {T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add {C}. {T}: Add {U} or {R}. This land deals 1 damage to you.

({T}: Add {U} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

This land enters tapped unless you control an Island or a Mountain. {T}: Add {U} or {R}.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

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.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Choose one — • Cast into the Fire deals 1 damage to each of up to two target creatures. • Exile target artifact.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Counter target spell.

Return all noncreature, nonland permanents to their owners' hands.

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying. Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

When this artifact enters, exile target card from a graveyard. {T}, Sacrifice this artifact: Exile each opponent's graveyard. {1}, {T}, Sacrifice this artifact: Draw a card.

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Target player draws X cards. • Target player mills twice X cards.

Each opponent mills fourteen cards. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.) When you cycle this card, each opponent mills four cards.

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

Whenever another permanent you control enters, each opponent mills a card.

When this creature enters, each opponent mills three cards. Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, that player mills three cards.

Whenever an opponent casts a spell, that player mills two cards.

Whenever a permanent becomes untapped, that permanent's controller mills a card.

Whenever a creature attacks you or a planeswalker you control, that creature's controller mills two cards.