Whenever another permanent enters the battlefield under your control, each opponent mills a card.

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

Sacrifice a creature: Add {C}{C}.

Whenever you discard a card, exile that card from your graveyard. {2}, {T}: Draw a card, then discard a card. {4}, {T}, Sacrifice Bag of Holding: Return all cards exiled with Bag of Holding to their owner's hand.

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

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

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

You have no maximum hand size. If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

{T}: Put a charge counter on Otherworld Atlas. {T}: Each player draws a card for each charge counter on Otherworld Atlas.

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

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

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards.

You have no maximum hand size. {T}: Add {C}.

{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Tokens you control have "{T}: Add {G}." Choose a Background (You can have a Background as a second commander.)

At the beginning of each player's draw step, that player draws an additional card.

{1}{R}, {T}, Sacrifice Magus of the Wheel: Each player discards their hand, then draws seven cards.

Flying Whenever you draw a card, Niv-Mizzet, the Firemind deals 1 damage to any target. {T}: Draw a card.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand. Whenever you draw a card, each opponent loses 1 life.

Flying Whenever you draw a card, create a 1/1 blue and red Insect creature token with flying and haste. {2}{U}{R}: Draw a card, then discard a card. When The Locust God dies, return it to its owner's hand at the beginning of the next end step.

Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.

Flash At the beginning of each player's draw step, that player draws an additional card.

Whenever an opponent casts a spell, that player draws seven cards.

Sacrifice a creature: Goblin Bombardment deals 1 damage to any target.

Whenever a creature enters the battlefield under your control, Impact Tremors deals 1 damage to each opponent.

Whenever you draw a card, put a foreshadow counter on Ominous Seas. Remove eight foreshadow counters from Ominous Seas: Create an 8/8 blue Kraken creature token. Cycling {2} ({2}, Discard this card: Draw a card.)

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: 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.

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

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.

This spell can't be copied. Copy any number of target instant and/or sorcery spells. You may choose new targets for the copies.

Casualty 1 (As you cast this spell, you may sacrifice a creature with power 1 or greater. When you do, copy this spell and you may choose a new target for the copy.) Counter target spell unless its controller pays {2}.

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.)

Add {R}{R}{R}{R}{R}.

Target creature you control gets +X/+X and gains hexproof and indestructible until end of turn. (A creature with hexproof and indestructible can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

Cleave {1}{U}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.) Counter target spell [that wasn't cast from its owner's hand].

Any number of target opponents each discard their hands, then draw seven cards. Draw a card.

{T}: Add {G}. Channel — {1}{G}, Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

Botanical Sanctum enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {G} or {U}.

Cliffgate enters the battlefield tapped. As Cliffgate enters the battlefield, choose a color other than red. {T}: Add {R} or one mana of the chosen color.

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

{T}, Sacrifice Evolving Wilds: 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}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

({T}: Add {G}.)

({T}: Add {G} or {U}.) Hedge Maze enters the battlefield tapped. When Hedge Maze enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

({T}: Add {U}.)

({T}: Add {R}.)

Prismari Campus enters the battlefield tapped. {T}: Add {U} or {R}. {4}, {T}: Scry 1.

{T}: Add one mana of any type that a land you control could produce.

You have no maximum hand size. {T}: Add {C}.

({T}: Add {R} or {G}.) As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Stormcarved Coast enters the battlefield tapped unless you control two or more other lands. {T}: Add {U} or {R}.

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

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

You may play an additional land on each of your turns.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

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

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.

For each creature your opponents control, create a 4/4 green Phyrexian Beast creature token. Each of those tokens fights a different one of those creatures.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Choose one — • Destroy target artifact. • Destroy target enchantment. • Destroy target artifact and target enchantment.

Choose two — • Incendiary Command deals 4 damage to target player or planeswalker. • Incendiary Command deals 2 damage to each creature. • Destroy target nonbasic land. • Each player discards all the cards in their hand, then draws that many cards.

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.

Exile target instant or sorcery card from a graveyard. Copy that card three times. You may cast the copies without paying their mana costs. Exile Mnemonic Deluge.

Each player shuffles the cards from their hand into their library, then draws that many cards. Metalcraft — If you control three or more artifacts, Molten Psyche deals damage to each opponent equal to the number of cards that player has drawn this turn.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Each player discards their hand, then draws seven cards. Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)