Commander creatures you own have "Creature tokens you control get +2/+2."

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.

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

{1}, {T}: Add {W}{U}.

{T}: Each player mills a card.

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

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

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

Equipped creature gets +1/-1. Whenever equipped creature dies, draw two cards. Equip {1}

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.)

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

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.) As long as Imperious Mindbreaker is paired with another creature, each of those creatures has "Whenever this creature attacks, each opponent mills cards equal to its toughness."

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.

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

Landfall — Whenever a land you control enters, each opponent mills three cards. (To mill a card, a player puts the top card of their library into their graveyard.)

Flash At the beginning of your upkeep, each player mills three cards. You may exile a creature card from among the cards milled this way. If you do, this creature becomes a copy of that card, except it has this ability.

When this enchantment enters, you become the monarch. At the beginning of your upkeep, any number of target players each mill two cards. If you're the monarch, each of those players mills ten cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)

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

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

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

This land enters tapped unless you control two or more other lands. {T}: Add {W} or {U}.

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

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

This land enters tapped unless you have two or more opponents. {T}: Add {W} or {U}.