Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.

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

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.

Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

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.

Untap all permanents you control during each other player's untap step.

Whenever a player casts a creature spell, each player returns all cards with the same name as that spell from their graveyard to the battlefield.

Each player chooses a creature type. Each player returns all creature cards of a type chosen this way from their graveyard to the battlefield.

Whenever you cast a creature spell, draw a card.

Choose a card name other than a basic land card name. Reveal the top seven cards of your library and put all of them with that name into your hand. Exile the rest.

Choose a creature type. Draw a card for each permanent you control of that type.

Draw a card for each Human you control.

Exile target nonland card from your graveyard. Search your library for any number of cards with the same name as that card, reveal them, put them into your hand, then shuffle.

As this artifact enters, 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.

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.

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

Counter target spell with mana value 4 or greater.

Counter target noncreature spell.

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

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

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {U} or {B}.

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

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

({T}: Add {G}.)

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

({T}: Add {U}.)

This land enters tapped. {T}: Add {B}, {G}, or {U}.

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

({T}: Add {B}.)

{T}: Add {C}. {T}: Add {U} or {B}. Activate only if you control a Swamp.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {U} or {B}.

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {G} or {U}.

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {G} or {U}.

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

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

This land enters tapped unless you control a Swamp or a Forest. {T}: Add {B} or {G}.

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

Spells and abilities your opponents control can't cause their controller to search their library. −1: Target player mills four cards. Then exile each opponent's graveyard.

{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard.

Target opponent reveals cards from the top of their library until four land cards are revealed. That player puts all cards revealed this way into their graveyard.

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

When this creature enters, you get {E}{E} (two energy counters). {T}, Pay {E}: Target player mills three cards.

{1}, {T}: Target player mills a card. (They put the top card of their library into their graveyard.) Tap four untapped Advisors you control: Target player mills twelve cards. A deck can have any number of cards named Persistent Petitioners.

Whenever you draw a card, each opponent mills two cards.

Whenever you draw a card, target opponent mills two cards. If two nonland cards that share a color were milled this way, repeat this process. {5}{U}: Draw a card, then discard a card.

Untap all nonland permanents you control.

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

Other green creatures you control get +1/+1. Other blue creatures you control get +1/+1. Untap all green and/or blue creatures you control during each other player's untap step.