You may have Spark Double enter the battlefield as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.

For each opponent, you create a token that's a copy of up to one target creature that player controls.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

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

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

({T}: Add {U}.)

({T}: Add {W}.)

({T}: Add {W} or {U}.) Prairie Stream enters the battlefield tapped unless you control two or more basic lands.

Exile the top eight cards of your library. You may put a land card from among them onto the battlefield. Until end of turn, for each nonland card type, you may cast a spell of that type from among the exiled cards without paying its mana cost.

Choose two — • Destroy all artifacts. • Destroy all enchantments. • Destroy all creatures with mana value 3 or less. • Destroy all creatures with mana value 4 or greater.

Choose one or more — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all graveyards.

Exile all creatures. Incubate X, where X is the number of creatures exiled this way. (Create an Incubator token with X +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

This spell can't be countered. Destroy all creatures.

Put all creatures on the bottom of their owners' libraries. Miracle {W} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Vigilance Other creatures you control get +2/+2. Creatures your opponents control get -2/-2.

Flying Other creatures you control with flying get +1/+1.

Creatures you control with flying get +1/+1.

Creatures with flying get +2/+0. Creatures without flying get -2/-0.

Creature tokens you control get +1/+1 and have vigilance.

Counter target spell.

This spell can't be countered. Counter target noncreature spell.

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.

Roll a d20. 1—9 | Draw two cards. 10—19 | Scry 2, then draw two cards. 20 | Scry 3, then draw three cards.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Roll a d20 and add the number of cards in your hand. 1—14 | Draw X cards. 15+ | Scry X, then draw X cards.

Flying If you would scry a number of cards, draw that many cards instead. Partner (You can have two commanders if both have partner.)

As Deification enters the battlefield, choose a planeswalker type. Planeswalkers you control of the chosen type have hexproof. As long as you control a creature, if damage dealt to a planeswalker you control of the chosen type would result in all loyalty counters on it being removed, instead all but one of those counters are removed.

Enchant planeswalker Enchanted planeswalker has "[+1]: Create three 1/1 white Soldier creature tokens." Whenever you activate a loyalty ability of enchanted planeswalker, creatures you control get +2/+2 and gain vigilance until end of turn.

Planeswalkers you control have "[0]: Proliferate" and "[−12]: Take an extra turn after this one." Whenever you cast a noncreature spell, choose a counter on target permanent. Put an additional counter of that kind on that permanent.

Equipped creature gets +1/+1 for each counter on it. Equipped permanent isn't a planeswalker and is a creature in addition to its other types. (Loyalty abilities can still be activated.) Equip planeswalker {1} Equip {3}

When Oath of Teferi enters the battlefield, exile another target permanent you control. Return it to the battlefield under its owner's control at the beginning of the next end step. You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once.

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

When Archaeomancer's Map enters the battlefield, search your library for up to two basic Plains cards, reveal them, put them into your hand, then shuffle. Whenever a land enters the battlefield under an opponent's control, if that player controls more lands than you, you may put a land card from your hand onto the battlefield.

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

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

Instant and sorcery spells you cast cost {1} less to cast. Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{T}: Add {U}. {2}{U}: Put an hour counter on Midnight Clock. At the beginning of each upkeep, put an hour counter on Midnight Clock. When the twelfth hour counter is put on Midnight Clock, shuffle your hand and graveyard into your library, then draw seven cards. Exile Midnight Clock.

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

Flash At the beginning of your upkeep, put an oil counter on Mindsplice Apparatus. Instant and sorcery spells you cast cost {1} less to cast for each oil counter on Mindsplice Apparatus.

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

Sky Diamond enters the battlefield tapped. {T}: Add {U}.

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

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

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

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

Scry 2, then draw two cards. Foretell {1}{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.)

When Cryptic Annelid enters the battlefield, scry 1, then scry 2, then scry 3. (To scry X, look at the top X cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

{1}, {T}: Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Scry 2, then draw a card.

At the beginning of your upkeep, scry 1. {5}{U}: Exchange control of Eyes Everywhere and target nonland permanent. Activate only as a sorcery.

Scry 4, then draw two cards.

Scry 2, then draw a card.

Buyback {2} (You may pay an additional {2} as you cast this spell. If you do, put this card into your hand as it resolves.) Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Focus Beam — At the beginning of your upkeep, roll a d4. Scry X, where X is the result. Perfect Illumination — Whenever you roll a die's highest natural result, draw a card.

When Oath of Jace enters the battlefield, draw three cards, then discard two cards. At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control.

Scry 1. Draw a card.

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Flying Discard a card: Prognostic Sphinx gains hexproof until end of turn. Tap it. Whenever Prognostic Sphinx attacks, scry 3.

Draw a card. Scry 2.

Flying Whenever Siani, Eye of the Storm attacks, scry X, where X is the number of attacking creatures with flying. Partner (You can have two commanders if both have partner.)

You may reveal this card from your opening hand. If you do, scry 3 at the beginning of your first upkeep. Flying At the beginning of your upkeep, scry 1.

Scry 4, then draw two cards.

At the beginning of your upkeep, scry 2. Whenever you choose to put one or more cards on the bottom of your library while scrying, exile that many cards from the bottom of your library. During your turn, you may play cards exiled with The Temporal Anchor.

Scry X, where X is the highest mana value among permanents you control, then draw three cards.

Exile X target creatures. For each creature exiled this way, its controller creates a 2/2 green Boar creature token.

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

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.

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

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.)

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

Tap any number of untapped creatures you control. Create a 4/4 white Angel creature token with flying for each creature tapped this way.

If one or more creature tokens would be created under your control, that many 4/4 white Angel creature tokens with flying and vigilance are created instead.

If one or more tokens would be created under your control, twice that many of those tokens are created instead. {1}{W/P}{W/P}, Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak, Glory Dominus. ({W/P} can be paid with either {W} or 2 life.)

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Whenever you cast a noncreature spell, create an X/X blue Shark creature token with flying, where X is that spell's mana value. Cycling {X}{1}{U} ({X}{1}{U}, Discard this card: Draw a card.) When you cycle Shark Typhoon, create an X/X blue Shark creature token with flying.

Create X 1/1 white Pegasus creature tokens with flying, where X is your life total.