Activated abilities of artifacts your opponents control can't be activated.
[+1]: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value.
[−2]: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile. Put that card into your hand.
Whenever a creature you control attacks alone, it gets +X/+X until end of turn, where X is the number of creatures you control.
"If we cannot have peace, we will have justice."
—Aurelia
This creature has vigilance as long as you control a Gate.
The Dimir agents watched from the shadows. "Eight hours, and I've yet to see him blink," Nefara hissed. "I suggest we find another way in."
Target creature gets +2/+2 until end of turn.
Addendum — If you cast this spell during your main phase, that creature gains flying until end of turn.
"Law is the light of civilization."
When this creature enters, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)
"You have the right to remain silent. Mostly because I tire of your excuses."
When this creature enters, detain up to two target creatures your opponents control. (Until your next turn, those creatures can't attack or block and their activated abilities can't be activated.)
"Your potential to commit a crime warrants further investigation."
Defender
Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)
"None may pass . . . for free."
Flying
Creatures can't attack you.
"Through the haze of battle I saw the glint of sun on golden mane, the sheen of glory clad in mail, and I dropped my sword and wept at the idiocy of war."
—Dravin, Gruul deserter
Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)
Artifacts and creatures your opponents control enter tapped.
"By the time your knees have worn through your robe, you may have begun to learn your place."
Battalion — Whenever this creature and at least two other creatures attack, this creature gets +2/+2 until end of turn.
"First, you must fight among the rank and file. It is there I will discern your skills as a leader."
—Aurelia, to Gideon Jura
When this creature enters, you gain 5 life.
"Where did she come from? More importantly, are there more like her?"
—Gideon Jura
The next 1 damage that would be dealt to target creature this turn is dealt to another target creature instead.
Draw a card.
Her enemy's strength is her own.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Flying
Equenauts are the seeds of the Conclave, scattered on the four winds, searching for new places to take root.
Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.
"No doubt the arbiters would put you away, after all the documents are signed. But I will have justice now."
—Alovnek, Boros guildmage
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Exile target attacking or blocking creature.
Into the light the good are welcomed, and with the light the evil are banished.
If one or more creature tokens would be created under your control, that many 4/4 white Angel creature tokens with flying and vigilance are created instead.
Create a 1/1 white Bird creature token with flying, then populate. (Create a token that's a copy of a creature token you control.)
"What root and branch cannot reach, our winged friends will attend to."
—Zunak, Selesnya strategist
Enchant permanent
When this Aura enters, you gain 4 life.
Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities.
Exile each creature you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.
"I watched its blade swing through me, but I was hollow, empty. I saw its face contort in rage but could not hear it snarl."
—Klattic, Boros legionnaire
During your turn, Gideon Blackblade is a 4/4 Human Soldier creature with indestructible that's still a planeswalker.
Prevent all damage that would be dealt to Gideon Blackblade during your turn.
[+1]: Up to one other target creature you control gains your choice of vigilance, lifelink, or indestructible until end of turn.
[−6]: Exile target nonland permanent.
Sacrifice this creature: Destroy target enchantment.
Some souls are too damaged to be of use to the Orzhov.
Battalion — Whenever this creature and at least two other creatures attack, put a +1/+1 counter on this creature.
Their ranks are thin, their formation is improvised, their weapons are borrowed, and you'd best get out of their way.
Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)
When the price of your sins comes due, the Church of Deals is there to collect.
Flying
Some sky steeds break from the thundering herd to ride free on the open winds.
Whenever another creature or planeswalker you control dies, put a +1/+1 counter on this creature.
Grief is a crucible where resolve is tempered.
Populate. Creatures you control gain indestructible until end of turn. (To populate, create a token that's a copy of a creature token you control.)
"No harm can come to me while the Worldsoul shelters me."
Summary Judgment deals 3 damage to target tapped creature.
Addendum — If you cast this spell during your main phase, it deals 5 damage instead.
Any challenge to Azorius authority is met with swift and potent retribution.
First strike (This creature deals combat damage before creatures without first strike.)
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
"Before I let you wield one of these, let's see you dodge one!"
Flying
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)
"Many wings haunt the skies these days. Few of them bear good tidings."
—Lavinia
Untap all creatures you control.
Draw a card.
"The call came, spell-borne through mortar and stone to the ear of every soldier. The call came, and the advantage was ours."
—Lodusz, captain of the watch
Flying
Lands on the battlefield and land cards in graveyards can't be the targets of spells or abilities your opponents control.
Your opponents can't play land cards from graveyards.
"Some bend the law. I tie it into knots."
Creatures you control gain indestructible until end of turn.
Addendum — If you cast this spell during your main phase, put a +1/+1 counter on each of those creatures and they gain vigilance until end of turn.
When this creature enters, create a 4/4 white Angel creature token with flying.
"I hear that Boros is losing its angels to the Gateless Movement. I'm sure this comes as no surprise to you."
—Teysa, to Lazav
Whenever this creature blocks a creature, you may return this creature to its owner's hand. If you do, you may put a creature card from your hand onto the battlefield blocking that creature.
Its fickle form holds hints of a thousand former identities.
If an opponent would mill one or more cards, they mill twice that many cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)
". . . and furthermore . . ."
Flying
: This creature's owner shuffles it into their library.
"About the sphinx, I have mixed feelings. Their wisdom I crave, but their secrecy I can't tolerate."
—Szadek
Flying
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Target player draws three cards. Then that player discards two cards unless they discard a land card.
"Four parts molten bronze, yes ... one part frozen mercury, yes, yes ... but then what?"
You may have this enchantment enter as a copy of any enchantment on the battlefield.
Simic mages create redundant backups of their experiments to reduce the consequences of catastrophe.
Return target nonland permanent you don't control to its owner's hand.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
The Izzet specialize in unnatural disaster.
Target creature you don't control gets -4/-0 until end of turn.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
Defender (This creature can't attack.)
Flying
Transmute (, 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.)
At the beginning of your upkeep, scry 1.
: Exchange control of this enchantment and target nonland permanent. Activate only as a sorcery.
"They've got eyes inside my head!"
When Fblthp enters, draw a card. If it entered from your library or was cast from your library, draw two cards instead.
When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library.
Graft 3 (This creature enters with three +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)
: Target creature with a +1/+1 counter on it gains flying until end of turn.
Enchant creature
Enchanted creature loses all abilities and has base power and toughness 1/1.
"Hop away now, little Eternal. Go eat some flies."
—Kasmina
This creature can't be blocked.
When this creature enters, return a creature you control to its owner's hand.
"This one opens the grate outside Zelzo Base. This one is for Ismeri Library. This one is for an invisible door . . . No, I've said too much."
When this creature enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
"When your enemy flees, send the sea to pursue them."
—Kiora
This creature has flying as long as you've cast an instant or sorcery spell this turn.
"Most compete for insects at street level. Some dwell near Izzet laboratories and ride the thermal updrafts."
—Yolov, Simic bioengineer
Counter target instant or sorcery spell.
Transmute (, 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.)
Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.
Rumors float through the city like crows, alighting on citizens seemingly at random.
Flying
Whenever this creature attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
"We're on the fortieth floor, with one window, no balcony. No one could possibly get in."
—Minosz, Orzhov chief of security
, : Target player mills a card. (They put the top card of their library into their graveyard.)
Tap four untapped Advisors you control: Target player mills twelve cards.
A deck can have any number of cards named Persistent Petitioners.
Flying
: Adapt 4. This ability costs less to activate for each instant and sorcery card in your graveyard. (If this creature has no +1/+1 counters on it, put four +1/+1 counters on it.)
Create a token that's a copy of target creature you control.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)
"My greatest creation—me!"
Counter target spell unless its controller pays .
"When properly invoked, the plasma globule encloses the offensive spell with a satisfying slurp."
The next sorcery spell you cast this turn can be cast as though it had flash. (It can be cast any time you could cast an instant.)
Draw a card.
A skilled Izzet chronarch can carry out an epic vendetta between the fall of one hourglass grain and the next.
Draw a card.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)
Genius is finding the edge of what's possible, then jumping over it.
Counter target spell. If that spell is countered this way, put it into its owner's hand instead of into that player's graveyard.
Draw a card.
"Well, at least all of that arm-waving and arcane babbling you did was impressive."
Return target nonland permanent with mana value X to its owner's hand.
Draw a card.
"Your deed cannot be undone. You, however, can be."
—Agosto, Azorius imperator