Flying Whenever a nontoken artifact you control enters, you may pay {1}{U}. If you do, create a token that's a copy of that artifact.

Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy.

{T}: Draw three cards. {2}{U}{U}: Return Arcanis to its owner's hand.

Tap an untapped Wizard you control: Draw a card.

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

Draw a card for each Island you control, then discard two cards.

Draw X cards, then discard a card.

Landfall — Whenever a land you control enters, you get {E} (an energy counter). {T}, Pay six {E}: Draw three cards.

Flying {2}, Return a land you control to its owner's hand: Draw a card, then discard a card.

Flying {4}, Return two lands you control to their owner's hand: Discard all the cards in your hand, then draw that many cards.

Look at the top five cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Target player draws X cards.

{T}: Add {C}. {1}{U}, {T}: Put target artifact card from your graveyard on top of your library.

{T}: Add {C}. {1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.

{T}: Add {C}. {T}, Sacrifice this land: Put your commander into your hand from the command zone.

Indestructible {T}: Add {C}.

This land enters tapped. {T}: Add {C}. Whenever this land or another land you control enters, if you control seven or more lands with different names, create a 2/2 black Zombie creature token.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {C}{C}.

{T}: Add {C}. {T}, Sacrifice a creature: You gain 1 life.

({T}: Add {U}.)

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

({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.

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

{T}: Add {U}.

{T}: Add {C}. {T}: Add {C}{C}. Spend this mana only to cast colorless spells. Activate only if you control seven or more lands.

{T}: Add {C}. {T}, Sacrifice this land: Destroy target land.

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

This land enters tapped. {1}, {T}: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Return this land to its owner's hand at the beginning of the next cleanup step.

{T}: Add {C}. {2}, {T}: This land becomes a copy of target land, except it has this ability.

Landfall — Whenever a land you control enters, choose one — • You may tap or untap target creature. • Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Landfall — Whenever a land you control enters, target player mills three cards.

Indestructible Equipped creature has indestructible. Equip {2}

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.

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

As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs {2} less to cast for each card exiled this way. Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)

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

Flying {3}, Return a land you control to its owner's hand: Target creature you control gains shroud until end of turn. (It can't be the target of spells or abilities.)

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.)

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.)

Equipped creature gets +1/+1 for each land you control. Equip legendary creature {3} Equip {7}

Whenever a permanent you control enters tapped, untap it.

{3}, Sacrifice this creature: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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.

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

Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.

{2}{U}, {T}, Discard a card, Sacrifice a land: Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

{2}, {T}, Sacrifice this artifact: Search your library for a land card, reveal it, put it into your hand, then shuffle.

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

Reveal a card in your hand, then put that card onto the battlefield if it has the same name as a permanent.

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

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

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

Whenever a land you control enters tapped, choose one — • Untap that land. • Tap target nonland permanent an opponent controls.

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Choose artifact, creature, or land. Tap all untapped permanents of the chosen type target player controls, or untap all tapped permanents of that type that player controls.

{T}: You may put a land card from your hand onto the battlefield.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Return target permanent to its owner's hand.

When this creature enters, if you cast it from your hand, return all permanents to their owners' hands except for Giants, Wizards, and lands.

Tap all lands target player controls and that player loses all unspent mana.

When Ovinomancer enters, sacrifice it unless you return three basic lands you control to their owner's hand. {T}, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

Tap an untapped Wizard you control: Counter target spell unless its controller pays {1}.

Flying {3}, Return three lands you control to their owner's hand: Return target creature to its owner's hand.

Flying {3}, Return a land you control to its owner's hand: Counter target spell unless its controller pays {3}.

Return target creature to its owner's hand. You create a token that's a copy of that creature.

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)