Whenever a player casts a creature spell, that player sacrifices a permanent unless they pay {1}.

Creature spells can't be cast.

Pay 4 life: Destroy Aether Storm. It can't be regenerated. Any player may activate this ability.

Anger of the Gods deals 3 damage to each creature. If a creature dealt damage this way would die this turn, exile it instead.

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.

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

At the beginning of your upkeep, you may create a 0/1 colorless Eldrazi Spawn creature token. It has "Sacrifice this creature: Add {C}."

Return up to three target artifacts and/or creatures to their owners' hands.

You may cast a spell with mana value 4 or less from your hand without paying its mana cost.

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

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

({T}: Add {G} or {U}.)

As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle.

Domain -- Creatures can't attack you unless their controller pays {X} for each creature they control that's attacking you, where X is the number of basic land types among lands you control.

Cosmotronic Wave deals 1 damage to each creature your opponents control. Creatures your opponents control can't block this turn.

Counter target spell.

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.

Indestructible

Equipped creature has indestructible.

Equip {2}

If you control a commander, you may cast this spell without paying its mana cost.

You may choose new targets for target spell or ability.

Return all nonland permanents to their owners' hands.

Miracle {1}{U} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Whenever a permanent deals damage to you, return it to its owner's hand.

Undaunted (This spell costs {1} less to cast for each opponent.)

Exile two target creatures. For each of those creatures, its controller reveals cards from the top of their library until they reveal a creature card, puts that card onto the battlefield, then shuffles the rest into their library.

Put a +1/+1 counter on target creature you control. Then that creature deals damage equal to its power to target creature or planeswalker you don't control.

For each creature, its controller sacrifices a permanent unless they pay {1}.

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

If you control a commander, you may cast this spell without paying its mana cost.

Counter target noncreature spell.

{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

Frontier Bivouac enters the battlefield tapped.

{T}: Add {G}, {U}, or {R}.

Whenever a spell or ability is put onto the stack, if it has a single target, reselect its target at random. (Select from among all legal targets.)

Gruul Guildgate enters the battlefield tapped.

{T}: Add {R} or {G}.

Partner with Pako, Arcane Retriever (When this creature enters the battlefield, target player may put Pako into their hand from their library, then shuffle.)

You may play lands and cast noncreature spells from among cards you exiled that have fetch counters on them, and you may spend mana as though it were mana of any color to cast those spells.

As an additional cost to cast this spell, sacrifice a land.

Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

Iceberg enters the battlefield with X ice counters on it.

{3}: Put an ice counter on Iceberg.

Remove an ice counter from Iceberg: Add {C}.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Guildgate enters the battlefield tapped.

{T}: Add {U} or {R}.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)

Target player takes an extra turn after this one. Return up to one target nonland permanent to its owner's hand. Exile Karn's Temporal Sundering.

({T}: Add {G}, {U}, or {R}.)

Ketria Triome enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)

When Leveler enters the battlefield, exile all cards from your library.

If Leyline of Anticipation is in your opening hand, you may begin the game with it on the battlefield.

You may cast spells as though they had flash.

Lightning Bolt deals 3 damage to any target.

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

Equip {0}

Counter target spell unless its controller pays {3}.

At the beginning of your upkeep, you may look at the top three cards of your library, then put them back in any order.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

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}.

Return target instant or sorcery card from your graveyard to your hand.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target artifact or enchantment. Its controller gains 4 life.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

({G/P} can be paid with either {G} or 2 life.)

Put target card from a graveyard on top of its owner's library.

If you control a commander, you may cast this spell without paying its mana cost.

Prevent all damage that would be dealt this turn by creatures your opponents control.

Players can't draw cards.

At the beginning of each player's draw step, that player exiles the top card of their library. If it's a land card, the player puts it onto the battlefield. Otherwise, the player casts it without paying its mana cost if able.

Partner with Haldan, Avid Arcanist

Haste

Whenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.

Enchant creature

Enchanted creature has flying.

Sacrifice Phantom Wings: Return enchanted creature to its owner's hand.

Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

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

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.)

Put target card from your graveyard on top of your library.

Choose one --

• Counter target blue spell.

• Destroy target blue permanent.

Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.

Counter target spell. Untap up to four lands.

Draw cards equal to the greatest power among creatures you control.

You may cast a spell with mana value 5 or less from your hand without paying its mana cost.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.

-2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.

Sacrifice Seal of Primordium: Destroy target artifact or enchantment.

Untap target creature. After this main phase, there is an additional combat phase followed by an additional main phase.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Simic Guildgate enters the battlefield tapped.

{T}: Add {G} or {U}.

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

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

Whenever you cast a spell, draw two cards.

At the beginning of your end step, discard your hand.

({T}: Add {U} or {R}.)

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

At the beginning of your upkeep, exile the top card of each opponent's library. Until end of turn, you may cast spells from among those exiled cards, and you may spend mana as though it were mana of any color to cast those spells.

({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.

Equipped creature gets +2/+2 and has protection from white and from blue.

Whenever equipped creature deals combat damage to a player, put a +1/+1 counter on a creature you control, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Equip {2}

Temple of Abandon enters tapped.

When Temple of Abandon enters, scry 1.

{T}: Add {R} or {G}.

Temple of Epiphany enters tapped.

When Temple of Epiphany enters, scry 1.

{T}: Add {U} or {R}.

Temple of Mystery enters tapped.

When Temple of Mystery enters, scry 1.

{T}: Add {G} or {U}.

{T}: Add {C}{C}. Activate only if you control five or more lands.

When Thassa's Oracle enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Counter target noncreature spell. Untap up to three lands.

Enchant creature

{U}{U}: Enchanted creature phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

Destroy target nonbasic land you don't control and target nonbasic land of an opponent's choice you don't control.

Volcanic Offering deals 7 damage to target creature you don't control and 7 damage to target creature of an opponent's choice you don't control.

{X}{U}: This turn, creatures can't attack unless their controller pays {X} for each attacking creature they control.

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

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