High Marshal Arguel

When High Marshal Arguel dies, conjure a card named Arguel's Blood Fast onto the battlefield and you may transform it. If you control an enchantment named Arguel's Blood Fast and a land named Temple of Aclazotz, instead create two 4/3 white and black Vampire Demon creature tokens with flying.

Brokers' Safeguard

Exile target nonartifact creature you control. It perpetually gains "This creature enters the battlefield with an additional shield counter on it." Then return that card to the battlefield under its owner's control.

Tibalt, Wicked Tormentor

+1: Add {R}{R}. Draft a card from Tibalt, Wicked Tormentor's spellbook, then exile it. Until end of turn, you may cast that card.
+1: Tibalt, Wicked Tormentor deals 4 damage to target creature or planeswalker unless its controller has Tibalt deal 4 damage to them. If they do, you may discard a card. If you do, draw a card.
−X: Create X 1/1 red Devil creature tokens with "When this creature dies, it deals 1 damage to any target."

Arvad, Weatherlight Smuggler

Deathtouch, lifelink
At the beginning of your end step, if a creature died this turn, Arvad, Weatherlight Smuggler perpetually gets +X/+X where X is the number of creatures that died this turn. This ability also triggers if Arvad is in your graveyard.

Raddic, Tal Zealot

Hexproof from white and from black
Whenever one or more Knights you control attack, draft a card from Raddic, Tal Zealot's spellbook.

Rankle, Pitiless Trickster

Flying
Rankle has lifelink and haste as long as an opponent controls no creatures.
When Rankle enters the battlefield, you may pay 1 life. When you do, each player discards a card and sacrifices a creature.
Whenever a player discards a card, Rankle perpetually gets +1/+0.

Cerise, Slayer of Fear

First strike, lifelink
At the beginning of your postcombat main phase, if you gained life this turn, seek a card with the highest mana value among cards in your library with mana value less than or equal to the amount of life you gained this turn.

Break Expectations

Target player reveals all cards with mana value 2 or greater in their hand. You choose a card from among those cards. Exile that card. If a card was exiled this way, that player drafts a card from Break Expectations's spellbook and reveals it.

Ishkanah, Broodmother

Reach
Other Spiders you control get +1/+2.
{1}{B/G}, Exile two cards from your graveyard: Draft a card from Ishkanah, Broodmother's spellbook.

Furgul, Quag Nurturer

At the beginning of your end step, conjure a card named Slimy Dualleech onto the battlefield if you control no Leeches. Otherwise, put a +1/+1 counter on each Leech you control.
{T}, Sacrifice a creature: Add an amount of {G} equal to the sacrificed creature's power.

A Golden Opportunity

(As this Saga enters and after your draw step add a lore counter. Sacrifice after III.)
I — Conjure a card named Gilded Goose onto the battlefield.
II, III — You may tap an untapped Bird you control and sacrifice an artifact. If you do, conjure a card named Golden Egg onto the battlefield.

Darigaaz, Shivan Champion

Flying
At the beginning of your end step, conjure a random card from Darigaaz, Shivan Champion's spellbook into exile face down with three egg counters on it. It gains "At the beginning of your upkeep, if this card is exiled, remove an egg counter from it. Then if it has no egg counters on it, put it onto the battlefield."

The Hourglass Coven

When The Hourglass Coven enters the battlefield, draft a card from The Hourglass Coven's spellbook twice, then put those cards onto the battlefield.
Other Warlocks you control get +1/+1.

Case of the Lost Witness

When this Case enters the battlefield, conjure four cards named Fblthp, the Lost into your library, then shuffle. Draw a card.
To solve — You control a legendary Homunculus.
Solved — You may look at the top card of your library any time and you may play lands and cast spells from the top of your library.

Saint Elenda

Lifelink
When Saint Elenda enters the battlefield, conjure a card of your choice from Saint Elenda's spellbook into your hand. You may cast that card this turn without paying its mana cost.
At the beginning of your end step, if you gained life this turn, create an X/X white Avatar creature token, where X is the amount of life you gained this turn.

Case of the Market Melee

When this Case enters the battlefield, it deals 1 damage to any target.
Damage isn't removed from creatures during cleanup steps.
To solve — Three or more creatures are damaged.
Solved — Whenever you attack with one or more creatures, this Case deals that much damage divided as you choose among any number of targets.

Ghalma the Shaper

Vigilance
Whenever Ghalma the Shaper attacks, conjure a card named Tempered Steel into your hand, then create a 1/1 colorless Myr artifact creature token.

Hex, Kellan's Companion

Haste
Whenever you cast an Adventure spell, if Hex, Kellan's Companion is on the battlefield or in exile, it perpetually gets +1/+1. Then if it's on the battlefield, exile it with a fetch counter on it.
Whenever you cast a spell from exile, if Hex is in exile with a fetch counter on it, put it onto the battlefield.

Arms Scavenger

At the beginning of your upkeep, draft a card from Arms Scavenger's spellbook, then exile it. Until end of turn, you may play that card.
Equip abilities you activate cost {1} less to activate.

Jessie Zane, Fangbringer

Deathtouch
When Jessie Zane enters the battlefield and whenever you cast a Snake spell, conjure a card named Ambush Viper into the top six cards of your library at random. It perpetually gains "When this creature enters the battlefield, draw a card."

Teysa of the Ghost Council

Starting intensity 0
When Teysa enters the battlefield, create a 1/1 white and black Spirit creature token with flying. Teysa intensifies by 1.
Spirits you control get +X/+0, where X is Teysa's intensity.
At the beginning of your end step, you may exile Teysa. If you do, at the beginning of your next upkeep, return Teysa to the battlefield under its owner's control and it gains haste.

Minthara of the Absolute

Starting intensity 0
Creatures you control get +X/+0, where X is Minthara of the Absolute's intensity.
Whenever one or more permanents you control leave the battlefield, cards you own named Minthara of the Absolute intensify by 1. This ability triggers only once each turn.

Syr Joshua and Syr Saxon

Double team
If you control exactly two legendary permanents named Syr Joshua and Syr Saxon, the "legend rule" doesn't apply to them.
Each other creature you control named Syr Joshua and Syr Saxon has battle cry.

Mythweaver Poq

Mythweaver Poq's power and toughness are each equal to the number of lands you control.
Whenever one or more nontoken lands enter the battlefield under your control, for each of them, conjure a duplicate of it onto the battlefield. This ability triggers only once each turn.

Niambi, Beloved Protector

Flash
When Niambi, Beloved Protector enters the battlefield, if you cast it, choose target nonlegendary creature card in your graveyard that was put there from the battlefield this turn. Return it to the battlefield. It perpetually gains "Whenever this creature becomes the target of a spell or ability, draw a card. This ability triggers only once each turn."

Argothian Uprooting

Put two +1/+1 counters on each of X target lands you control. They each become 0/0 Elemental creatures with reach, haste, and "When this creature leaves the battlefield, conjure a card named Forest onto the battlefield tapped." They're still lands.

Calim, Djinn Emperor

Flying, ward {2}
Calim's Breath — {1}{U}, Discard Calim: Tap up to one target nonland permanent. Draw a card. Then you may exile two other cards named Calim, Djinn Emperor from your graveyard. When you do, return Calim, Djinn Emperor from your graveyard to the battlefield tapped.
When you discard Calim, conjure a card named Calim, Djinn Emperor into your library seventh from the top.

Emmara, Voice of the Conclave

Convoke
When Emmara, Voice of the Conclave enters the battlefield, draft a card from Emmara, Voice of the Conclave's spellbook.

Bladehold Cleaver

For Mirrodin!
Equipped creature gets +2/+2.
Whenever equipped creature dies, draft a card from Bladehold Cleaver's spellbook.
Equip {3}

Captain Eberhart

Double strike
Spells cast from among cards you drew this turn cost {1} less to cast.
Spells cast from among cards your opponents drew this turn cost {1} more to cast.

Reezug, the Bonecobbler

{T}: Target creature card in your graveyard perpetually becomes an artifact. You may cast that card this turn. (It loses all other card types.)

Crucias, Titan of the Waves

At the beginning of your end step, you may discard a card. If you do, create a Treasure token and choose ambitious or expedient. If you chose ambitious, seek a card with greater mana value than the discarded card. If you chose expedient, seek a card with lesser mana value than the discarded card.

Wild Goose Chase

Draw two cards, then discard two cards. Create a Food token.

Albiorix, Goose Tyrant

Flying, Trample, Ward {1}
Whenever you sacrifice a token, Albiorix perpetually gets +1/+1. This ability also triggers if Albiorix is in exile.

Albiorix, Goose Tyrant // Wild Goose Chase

Nashi, Illusion Gadgeteer

Menace, Ward {2}
When Nashi enters the battlefield, secretly choose a card in your graveyard and conjure a duplicate of it into your hand. If the duplicate isn't a land card, it perpetually gains flash.

Caldera Breaker

Trample
When Caldera Breaker enters the battlefield, exile all Mountain cards from your library. When you do, Caldera Breaker deals that much damage to target creature or planeswalker an opponent controls.
When Caldera Breaker dies, put all cards exiled with it onto the battlefield under their owner's control. Conjure four cards named Volcanic Geyser into your library, then shuffle.

Oyaminartok, Polar Werebear

Oyaminartok, Polar Werebear has hexproof if it hasn't dealt damage yet.
Whenever Oyaminartok deals combat damage to a player, create a Food token.
{U}, Sacrifice a Food: Draft a card from Oyaminartok's spellbook. When you do, add {U}{U}{U}. Spend this mana only to cast blue creature spells.

Vona de Iedo, the Antifex

Menace
When Vona de Iedo enters the battlefield, destroy target nonland, nontoken permanent an opponent controls. Then you may discard a card. If you do, conjure a duplicate of that permanent into your hand, and the duplicate perpetually gains "Mana of any type can be spent to cast this spell."

Jarsyl, Dark Age Scion

Starting intensity 1
At the beginning of combat on your turn, you may cast a spell with mana value equal to Jarsyl, Dark Age Scion's intensity from your graveyard without paying its mana cost. If you do, Jarsyl intensifies by 1.

Gale, Conduit of the Arcane

Specialize {2}
When Gale, Conduit of the Arcane enters the battlefield, if you cast it, return target instant or sorcery card from your graveyard to your hand.

Boseiju Pathlighter

When Boseiju Pathlighter enters the battlefield, draft a card from Boseiju Pathlighter's spellbook.

Celestial Vault

{W}, {T}: Draft a card from Celestial Vault's spellbook and exile it face down.
{1}, Sacrifice Celestial Vault: Put each card exiled with Celestial Vault into your hand.

Brazen Boarding

Brazen Boarding deals 4 damage to target creature or planeswalker. If excess damage is dealt this way, conjure a card with mana value equal to that excess damage from Brazen Boarding's spellbook onto the battlefield. If that excess damage is 4 or greater, instead conjure a card named Admiral Beckett Brass onto the battlefield.

Bind to Secrecy

Choose one —
• Counter target noncreature spell.
• Conjure a duplicate of target creature card in an opponent's graveyard into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell."
If there are five or more mana values among cards in your graveyard, draft a card from Bind to Secrecy's spellbook.

Rusko, Clockmaker

When Rusko, Clockmaker enters the battlefield, conjure a card named Midnight Clock onto the battlefield.
Whenever you cast a noncreature spell, put an hour counter on each permanent you control named Midnight Clock. Each opponent loses 1 life and you gain 1 life.

Arek, False Goldwarden

Starting intensity 0
Whenever another creature enters the battlefield under your control, cards you own named Arek, False Goldwarden intensify by 1.
{3}{W}{B}, {T}, Sacrifice Arek, False Goldwarden: Target opponent loses X life and you gain X life, where X is Arek's intensity.

Big Spender

Haste
Whenever one or more creatures you control become blocked, create a Treasure token.
Sacrifice two artifacts: Draft a card from Big Spender's spellbook.

Assemble the Team

Search the top third of your library, rounded up, for a card. Put that card into your hand, then shuffle.

Garruk, Wrath of the Wilds

+1: Choose a creature card in your hand. It perpetually gets +1/+1 and perpetually gains "This spell costs {1} less to cast."
−1: Draft a card from Garruk, Wrath of the Wilds's spellbook and put it onto the battlefield.
−6: Until end of turn, creatures you control get +3/+3 and gain trample.

Tajic, Legion's Valor

Indestructible, haste
At the beginning of combat on your turn, put a +1/+1 counter on Tajic, Legion's Valor. Then conjure a card with mana value equal to the number of +1/+1 counters on it from Tajic, Legion's Valor's spellbook onto the battlefield. It gains haste until end of turn and attacks this combat if able.

Imoen, Trickster Friend

Specialize {5}. This ability costs {3} less to activate if there are two or more instant and/or sorcery cards in your graveyard.
Imoen, Trickster Friend can't be blocked as long as it's attacking alone.

Emperor Apatzec Intli IV

Whenever another creature enters the battlefield under your control, that creature perpetually gains haste if its power is 4 or greater. If its toughness is 4 or greater, you gain 4 life. If its mana value is 4 or greater, seek a creature card.

Colossal Chorus

Starting intensity 2
Conjure X cards named Colossal Dreadmaw onto the battlefield, where X is this spell's intensity.
All Chorus cards you own intensify by 1.

Kardum, Patron of Flames

Haste
Whenever Kardum, Patron of Flames attacks, put a flame counter on it, then seek a card with mana value equal to the number of flame counters on it and exile that card face down.
When Kardum dies, put all cards you own exiled with it into your hand. At the beginning of the end step of your next turn, discard those cards.

Oglor, Devoted Assistant

At the beginning of your upkeep, look at the top two cards of your library, then put one of them into your graveyard.
Whenever a creature card is put into your graveyard from your library or hand, it perpetually gains "When this card leaves your graveyard, create a tapped 2/2 black Zombie creature token."

Liara of the Flaming Fist

At the beginning of each combat, each creature you control gets +1/+1 until end of turn if it has the same name as another creature you control or a creature card in your graveyard.
{1}{R}{W}: Another target nontoken creature you control gains first strike and double team until end of turn. Activate only as a sorcery and only once.

Bellowsbreath Ogre

Starting intensity 1
Whenever Bellowsbreath Ogre attacks, it deals damage equal to its intensity to any target. Then Bellowsbreath Ogre intensifies by 1.