When Agent of Treachery enters the battlefield, gain control of target permanent.

At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

When Auramancer enters the battlefield, you may return target enchantment card from your graveyard to your hand.

When Aviary Mechanic enters the battlefield, you may return another permanent you control to its owner's hand.

Azorius Guildgate enters the battlefield tapped.

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

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

{W/U}{W/U}{W/U}{W/U}, {T}, Sacrifice Azorius Locket: Draw two cards.

Flying

When Cloudblazer enters the battlefield, you gain 2 life and draw two cards.

Tap target creature.

Draw a card.

---

Create two 1/1 colorless Thopter artifact creature tokens with flying, then you gain 1 life for each creature you control.

Flash (You may cast this spell any time you could cast an instant.)

When Deputy of Acquittals enters the battlefield, you may return another target creature you control to its owner's hand.

Destroy target artifact or enchantment.

Return target nonland permanent to its owner's hand.

When Dovin's Acuity enters the battlefield, you gain 2 life and draw a card.

Whenever you cast an instant spell during your main phase, you may return Dovin's Acuity to its owner's hand.

Return target creature to its owner's hand. You gain 2 life.

When Dwarven Priest enters the battlefield, you gain 1 life for each creature you control.

Flying

When Elite Guardmage enters the battlefield, you gain 3 life and draw a card.

Counter target creature spell.

When Evangel of Heliod enters the battlefield, create a number of 1/1 white Soldier creature tokens equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Counter target spell. You gain 5 life.

Firemind Vessel enters the battlefield tapped.

{T}: Add two mana of different colors.

When Forbidding Spirit enters the battlefield, until your next turn, creatures can't attack you or planeswalkers you control unless their controller pays {2} for each of those creatures.

Gateway Plaza enters the battlefield tapped.

When Gateway Plaza enters the battlefield, sacrifice it unless you pay {1}.

{T}: Add one mana of any color.

Draw two cards.

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

Enchant creature

Enchanted creature loses all abilities and is a blue Fish with base power and toughness 0/1.

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)

Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Vigilance

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

Suspend 4--{W}{U}

Flying, vigilance

Whenever Jelenn Sphinx attacks, other attacking creatures get +1/+1 until end of turn.

Keymaster Rogue can't be blocked.

When Keymaster Rogue enters the battlefield, return a creature you control to its owner's hand.

When Kor Cartographer enters the battlefield, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Protection from red

When Lavinia of the Tenth enters the battlefield, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.)

Flash

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

Flying

When Lyev Skyknight enters the battlefield, detain target nonland permanent an opponent controls. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)

Meandering River enters the battlefield tapped.

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

Defender

When Mnemonic Wall enters the battlefield, you may return target instant or sorcery card from your graveyard to your hand.

Return target permanent you control to its owner's hand. You gain 4 life.

Counter target noncreature spell.

Flash

When Niambi, Esteemed Speaker enters the battlefield, you may return another target creature you control to its owner's hand. If you do, you gain life equal to that creature's mana value.

{1}{W}{U}, {T}, Discard a legendary card: Draw two cards.

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

{4}{W}{U}: Ojutai Monument becomes a 4/4 white and blue Dragon artifact creature with flying until end of turn.

Flash

When Omen of the Sea enters the battlefield, scry 2, then draw a card.

{2}{U}, Sacrifice Omen of the Sea: Scry 2.

Flash

When Omen of the Sun enters the battlefield, create two 1/1 white Human Soldier creature tokens and you gain 2 life.

{2}{W}, Sacrifice Omen of the Sun: Scry 2.

Exile target creature. At the beginning of the next end step, return that card to the battlefield under its owner's control with a +1/+1 counter on it.

Imprint -- When Phyrexian Ingester enters the battlefield, you may exile target nontoken creature.

Phyrexian Ingester gets +X/+Y, where X is the exiled creature card's power and Y is its toughness.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Return target permanent you control to its owner's hand.

Return each creature that dealt damage this turn to its owner's hand.

Put target creature on top of its owner's library.

Awaken 4--{4}{W}{U} (If you cast this spell for {4}{W}{U}, also put four +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Kicker--Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell.)

Return target nonland permanent to its owner's hand. If this spell was kicked, return another target nonland permanent to its owner's hand.

When Sea Gate Oracle enters the battlefield, look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Target player reveals their hand. You gain life equal to the number of cards in that player's hand.

Draw three cards, then discard a card.

Flying

When Silver Drake enters the battlefield, return a white or blue creature you control to its owner's hand.

Counter target spell.

Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Flying, vigilance

Spells your opponents cast that target Sphinx of New Prahv cost {2} more to cast.

Draw two cards.

Addendum -- If you cast this spell during your main phase, you gain 2 life.

At the beginning of each player's upkeep, that player returns a creature they control to its owner's hand.

Counter target spell unless its controller pays {X}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Exile target permanent you control. Return that card to the battlefield under its owner's control at the beginning of the next end step. If it enters the battlefield as a creature, it enters with an additional +1/+1 counter on it.

When Tempest Caller enters the battlefield, tap all creatures target opponent controls.

Counter target spell. Its controller mills three cards.

Tranquil Cove enters the battlefield tapped.

When Tranquil Cove enters the battlefield, you gain 1 life.

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

{1}, Sacrifice Traveler's Amulet: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

When Urbis Protector enters the battlefield, create a 4/4 white Angel creature token with flying.

Exile target creature. You draw cards equal to that creature's power. At the beginning of your next upkeep, return that card to the battlefield under its owner's control. If you do, discard cards equal to that creature's toughness.

For each spell and ability your opponents control, counter it unless its controller pays {4}.

Flash

When Whitemane Lion enters the battlefield, return a creature you control to its owner's hand.

Flying

When Wispweaver Angel enters the battlefield, you may exile another target creature you control, then return that card to the battlefield under its owner's control.

Flying

When Wormfang Drake enters the battlefield, sacrifice it unless you exile a creature you control other than Wormfang Drake.

When Wormfang Drake leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Companion -- Your starting deck contains at least twenty cards more than the minimum deck size. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.)

Flying

When Yorion enters the battlefield, exile any number of other nonland permanents you own and control. Return those cards to the battlefield at the beginning of the next end step.