Flying {2}{U}, {T}: Draw two cards, then discard a card. Whenever Atemsis deals damage to an opponent, you may reveal your hand. If cards with at least six different mana values are revealed this way, that player loses the game.

Whenever a creature you control deals combat damage to a player, you may draw a card. {1}{U}, {T}: Creatures your opponents control attack this turn if able.

Commander creatures you own have "{2}, Sacrifice an artifact: Put a +1/+1 counter on this creature and draw a card."

Enchant creature Enchanted creature has "Whenever this creature deals combat damage to a player, draw a card." As long as enchanted creature is legendary, it gets +1/+1 and has ward {1}. (Whenever enchanted creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)

Flying Whenever this creature attacks, gain control of target permanent you own but don't control. Disguise {1}{U} When this creature is turned face up, target opponent gains control of any number of target permanents you control. Draw a card for each one they gained control of this way.

Enchant creature Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, you may draw a card." At the beginning of your end step, if you didn't attack with a creature this turn, sacrifice this Aura.

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.

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

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

Draw two cards, then discard two cards. Untap up to three lands.

Whenever a creature you control becomes blocked, you may return it to its owner's hand. Whenever one or more creatures you control deal combat damage to a player, draw a card.

Whenever equipped creature becomes blocked by a creature, you may draw two cards. Equip {1}

Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Whenever equipped creature deals combat damage to a player, it connives X, where X is the amount of damage it dealt to that player. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.) Equip {2}

Exchange control of two target creatures controlled by different players. If you control neither creature, draw three cards.

Flying As long as you control four or more artifacts, this creature has hexproof. (It can't be the target of spells or abilities your opponents control.) Tap two untapped artifacts you control: Draw a card.

This creature can't be blocked by green creatures. Whenever this creature deals damage to an opponent, you may draw a card. If you do, discard a card. {1}{U}: This creature gets +2/-2 until end of turn.

You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card.

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.

Imprint — When this artifact enters, you may exile target land you control. Whenever a land with the same name as the exiled card is tapped for mana, its controller adds one mana of any type that land produced.

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

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

Creature spells you cast that share a creature type with this creature cost {1} less to cast. {T}: This creature becomes the creature type of your choice until end of turn.

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.

({T}: Add {U}.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

Counter target spell.

Choose one — • Counter target creature or enchantment spell. • Return one or two target creatures and/or enchantments you own to your hand.

Equipped creature has double strike. Whenever equipped creature attacks, you may have target creature block it this turn if able. Equip {4}

Counter target noncreature spell.

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.)

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

Flying At the beginning of your upkeep, sacrifice another artifact. If you can't, tap this creature and you lose 4 life.

Spree (Choose one or more additional costs.) + {2} — Exchange control of two target creatures. + {1} — Exchange control of two target artifacts. + {1} — Exchange control of two target enchantments.

{T}: Target creature attacks this turn if able. {T}: Target creature blocks this turn if able.

Flying {T}: Target creature you control with toughness 2 or less gets +1/+1 and gains flying until end of turn. When this creature leaves the battlefield this turn, sacrifice that creature. When the creature leaves the battlefield this turn, sacrifice this creature.

Changeling (This card is every creature type.) {T}: Target creature gains all creature types until end of turn. {T}: Target creature loses all creature types until end of turn.

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

{T}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

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

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.)

Defender When this creature enters, an opponent gains control of it. At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token.

As this enchantment enters, choose a creature type. Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

{4}, {T}: Create a 2/2 colorless Shapeshifter creature token with changeling. (It has every creature type.)

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.)

Changeling (This card is every creature type.)