Equipped creature has double strike. (It deals both first-strike and regular combat damage.) Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Activated abilities of creatures can't be activated.

Artifacts, creatures, and lands your opponents control enter tapped.

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

Whenever a player puts a nontoken creature onto the battlefield, that player returns a land they control to its owner's hand.

As this enchantment enters, choose a land type. Each land of the chosen type has phasing. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)

Return all lands to their owners' hands.

Each opponent who controls more creatures than you can't cast creature spells. The same is true for artifacts and enchantments. Each opponent who controls more lands than you can't play lands.

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

At the beginning of your upkeep, put a time counter on this enchantment. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on this enchantment.

As this artifact enters, choose a color. Creatures you control of the chosen color get +1/+1. Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

{T}: Add {U}. {1}{U}: This artifact becomes a 1/2 blue Atog artifact creature until end of turn. {0}: This creature gets +3/+3 until end of turn. You skip your next turn. Activate only once each turn and only if this permanent is a creature.

This artifact enters tapped. As this artifact enters, choose a color. {T}: Add one mana of the chosen color.

As this artifact enters, choose a color. Creatures of the chosen color get +1/+1. Whenever a basic land is tapped for mana of the chosen color, its controller adds an additional one mana of that color.

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

If you would lose unspent mana, that mana becomes colorless instead.

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

Flash When this artifact enters during the declare attackers step, you may reselect which player or permanent target attacking creature is attacking. (It can't attack its controller or their permanents.) {T}: Add {U}.

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

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

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

This artifact enters tapped. {T}: Add {U}.

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

This land enters tapped unless you control an Island. {T}: Add {U}. {2}{U}{U}, {T}: Scry 2.

This land enters tapped. When this land enters, sacrifice it unless you return an untapped Island you control to its owner's hand. {T}: Add {C}{U}.

({T}: Add {U}.)

({T}: Add {U}.) This land enters tapped unless you control three or more other Islands. When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.) Teferi's Isle enters tapped. {T}: Add {U}{U}.

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

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.

Counter target instant or sorcery spell. Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Flying As an additional cost to cast blue permanent spells, you may pay 2 life. Those spells cost {U} less to cast if you paid life this way. This effect reduces only the amount of blue mana you pay. Whenever you cast a blue permanent spell, draw a card.

If this card is in your opening hand, you may begin the game with it on the battlefield. You may cast spells as though they had flash.

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

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) All lands are Islands in addition to their other types. Creatures without flying or islandwalk can't attack.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Whenever a creature you control attacks, it phases out at end of combat. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)

Any player may cast spells as though they had flash. Your opponents can't cast spells during your turn.

You may cast spells as though they had flash.

Counter target spell.

Surge {3}{U}{U} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) Return all nonland permanents to their owners' hands. If this spell's surge cost was paid, create an 8/8 blue Octopus creature token.

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.)

Counter target spell with mana value 4 or greater.

Return to their owners' hands all creatures with toughness less than or equal to the number of Islands you control.

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost. Tap all creatures.

Return all creatures to their owners' hands.

When this enchantment enters, choose two target creatures. For as long as this enchantment remains on the battlefield, exchange the text boxes of those creatures.

Flash This spell can't be countered. Whenever you cast a spell, choose up to one — • Return target spell you don't control to its owner's hand. • Return target nonland permanent to its owner's hand.

Gain control of target artifact, creature, or enchantment. Lands you control don't untap during your next untap step.

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

When this creature enters, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

You may return three Islands you control to their owner's hand rather than pay this spell's mana cost. Counter target spell.

Return all creatures to their owners' hands except for Krakens, Leviathans, Octopuses, and Serpents.