Vigilance
Whenever Agrus Kos becomes the target of an ability that targets only it, you may pay . If you do, copy that ability for each other creature you control that ability could target. Each copy targets a different one of those creatures. ( can be paid with either or .)
Whenever this creature becomes the target of a spell or ability for the first time each turn, put a +1/+1 counter on it.
As long as this creature has three or more +1/+1 counters on it, it has flying.
Enchant creature you control
When this Aura enters, exile target nonland permanent an opponent controls until this Aura leaves the battlefield.
Enchanted creature has ward . (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)
Whenever another creature you control enters, you gain 1 life.
, : Exile another target creature you control, then return it to the battlefield under its owner's control.
: Put a +1/+1 counter on another target attacking creature you control. If that creature is a Cat, it gains first strike until end of turn. (It deals combat damage before creatures without first strike.)
Leonin claws were already deadly weapons of natural evolution before he improved upon them.
Vigilance
At the beginning of your end step, untap each other artifact creature you control.
, : Create a 5/5 colorless Vehicle artifact token named Zeppelin with flying and crew 3. (It has "Tap any number of creatures you control with total power 3 or more: This token becomes an artifact creature until end of turn.")
This creature enters with five reprieve counters on it.
Whenever another nontoken creature you control dies, if its mana value was 1 or greater, you may remove that many reprieve counters from this creature. If you do, return that card to the battlefield under its owner's control.
Whenever another nontoken creature you control enters, if it wasn't cast, create a token that's a copy of that creature, except it's a 0/1 white Illusion.
, Sacrifice five Illusions: Exile target nonland permanent.
Whenever you draw your second card each turn, create a 2/2 blue Drake creature token with flying.
Whenever you draw your fifth card each turn, Alandra and Drakes you control each get +X/+X until end of turn, where X is the number of cards in your hand.
When this creature enters, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom and the rest on top in any order.)
Whenever this creature attacks, you may return another creature you control to its owner's hand. If you do, this creature can't be blocked this turn.
Enchant creature or planeswalker
When this Aura enters, tap enchanted permanent and investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")
Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.
You may look at the top card of your library any time.
You may play snow lands and cast snow spells from the top of your library.
Whenever another snow permanent you control enters, you may pay , , or . If you do, put a +1/+1 counter on Isu.
If you would scry a number of cards, scry that many cards plus one instead.
: Look at the top card of your library. If it's a Kraken, Leviathan, Octopus, or Serpent creature card, you may put it onto the battlefield. If you don't put the card onto the battlefield, you may put it on the bottom of your library.
Counter target creature or planeswalker spell. Create a 1/1 colorless Thopter artifact creature token with flying.
When this creature enters, draw a card, then discard a card.
, Exile this card from your graveyard: Draw a card, then discard a card.
Maintaining a personal bubble is even more important when you have gills.
You may have this creature enter as a copy of any creature on the battlefield, except it's a Pirate in addition to its other types and it has "Whenever this creature or another creature with the same name deals combat damage to a player, you draw a card."
Choose one —
• Counter target spell unless its controller pays .
• Draw two cards.
It's easy to be two steps ahead when you can see their every thought.
This spell costs less to cast if you control at least two creatures that share a creature type.
Put target nonland permanent into its owner's library second from the top.
"I told you this one would be a handful."
Whenever Ashcoat attacks or blocks, other Rats you control get +X/+X until end of turn, where X is the number of Rats you control.
At the beginning of your end step, you may mill four cards. If you do, return up to two Rat creature cards from your graveyard to your hand. (To mill a card, put the top card of your library into your graveyard.)
This creature enters with two +1/+1 counters on it.
, Remove a +1/+1 counter from this creature: It deals 1 damage to each other creature and each player.
Only an imitation of tortured shrieking
—or so the Rakdos claim.
At the beginning of your upkeep, this creature deals 1 damage to each opponent. You gain life equal to the damage dealt this way.
"If a vampire were feeding on you every night, wouldn't you have bite marks? Stop wasting my time."
—Donya, village healer
Choose one —
• Destroy target creature or planeswalker.
• Return target Zombie creature card from your graveyard to the battlefield tapped.
"Open grave available, only one previous tenant."
—Sign on cemetery gate
When this creature dies, choose one. If you have exactly 13 life, you may choose both instead.
• You draw a card and you lose 1 life.
• Exile target opponent's graveyard. That player loses 1 life.
"Could you please spare some of your blood for my precious little tree?"
When this creature enters, it deals X damage to target creature or planeswalker an opponent controls, where X is the number of creature cards in your graveyard.
You know you've ventured too deep when the rats stop running and hold their ground.
Flying, deathtouch, lifelink
Whenever you gain life, Rodolf Duskbringer gains indestructible until end of turn.
At the beginning of your end step, you may pay . When you do, return target creature card with mana value X or less from your graveyard to the battlefield, where X is the amount of life you gained this turn.
When this creature enters, each opponent discards a card. For each opponent who can't, put two +1/+1 counters on this creature.
As larvae, they burrow into a host's brain to feed upon it, growing until they're large enough to burst free and seek out larger prey.
, Exile this card from your graveyard: Create two 2/2 black Zombie creature tokens. Activate only as a sorcery.
It was the perfect disguise—at least until its stomach started moaning.
: Put a bounty counter on target creature or planeswalker. Activate only as a sorcery.
Whenever a creature or planeswalker an opponent controls with a bounty counter on it is dealt damage, destroy it.
"You sign. They die. Simple as that."
Haste
Whenever Ardoz or another creature you control enters, that creature gets +2/+0 until end of turn.
: Create a 1/1 red Goblin creature token with haste. Activate only as a sorcery.
Flying
Whenever a source you control deals damage to you, put that many +1/+1 counters on Auntie Blyte.
, , Remove X +1/+1 counters from Auntie Blyte: It deals X damage to any target.
Whenever an attacking creature you control dies, this enchantment deals 2 damage to each opponent.
Raid — At the beginning of each of your postcombat main phases, if you attacked this turn, exile the top card of your library. Until end of combat on your next turn, you may play that card.
: This creature deals 1 damage to target creature token, player, or planeswalker.
The blacksmith forgot to feed the forge, so the forge fed itself.
At the beginning of combat on your turn, create a 1/1 red Pirate creature token with menace and haste. Exile it at the beginning of the next end step.
Sky pirates often leap randomly into the fray and assume there will be something to land on.
When this creature enters, exile the top card of your library. During any turn you attacked with this creature, you may play that card.
Slonk was struck by lightning twenty-seven times before he got the idea. Another forty-three hits and he'd perfected it.
Flying
Whenever you cast a spell from anywhere other than your hand, you may pay . If you do, copy that spell and you may choose new targets for the copy. If the copy is a permanent spell, it gains haste and "At the beginning of your end step, sacrifice this permanent." (A copy of a permanent spell becomes a token.)
First strike
Whenever this creature attacks, you may cast target instant or sorcery card from your graveyard by paying in addition to its other costs. If that spell would be put into a graveyard, exile it instead. When you cast that spell, this creature gets +X/+0 until end of turn, where X is that spell's mana value.
Flying
When this creature enters, you may discard a card. If you do, draw a card.
You can gather a tidy fortune if you can avoid getting clobbered by falling treasure.
This creature enters with X +1/+1 counters on it.
If one or more +1/+1 counters would be put on another creature you control, that many plus one +1/+1 counters are put on it instead.
, Remove a +1/+1 counter from this creature: Put a +1/+1 counter on another target creature you control.
Reach
When this creature enters, you may search your library for a basic land card, reveal it, then shuffle and put that card on top.
It's bad luck to step on one, but worse luck to have one step on you.
: Each player creates a colorless artifact token named Banana with ", Sacrifice this token: Add or . You gain 2 life."
Whenever an artifact an opponent controls is put into a graveyard from the battlefield, put a +1/+1 counter on each creature you control that's an Ape or a Monkey.
Whenever Kibo attacks, defending player sacrifices an artifact of their choice.
: This creature becomes a Werewolf. Put two +1/+1 counters on it and you draw a card. Activate only once.
She had always believed in the transformative power of great literature.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Whenever this creature enters or attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
When they call, nature answers.
Search your library for a basic land card, put it onto the battlefield, then shuffle. Until end of turn, that land becomes a 4/3 Insect creature with reach and haste. It's still a land.
When they had the house checked for bugs, they didn't think big enough.
Whenever you cast a creature spell with mana value 5 or greater, that creature enters with X additional +1/+1 counters on it, where X is its mana value minus 4.
Creatures you control with three or more +1/+1 counters on them have haste.
: Add .
: Creatures you control get +1/+1 and gain trample until end of turn.
The nightsong begins with a lone howl, but soon swells to a deafening chorus.
Reach
Towering Gibbon's power is equal to the greatest mana value among creatures you control.
"Don't worry, folks. We're perfectly safe here. That's a banana processing plant."
You may play lands and cast Insect spells from your graveyard.
Whenever another Insect you control dies, put it on the bottom of its owner's library, then mill two cards. (Put the top two cards of your library into your graveyard.)
: Target Insect gets +1/+0 and gains deathtouch until end of turn. ( can be paid with either or .)
When this creature enters, you may pay . When you do, create a token that's a copy of target token you control not named Dutiful Replicator.
"Careful. Leave it running for too long and it'll turn the whole building into angels."
—Tawnos
: Add .
, , Sacrifice this artifact: You draw two cards and you lose 2 life.
"The courier's death was regrettable, but then again, she was warned not to touch it."
—Lord Xander
Flash
As this artifact enters, choose a creature type.
Creatures you control of the chosen type get +1/+1.
Perfect for keeping time at a battle or a ball.
This artifact enters tapped.
When this artifact enters, you may look at the top four cards of your library. If you do, reveal up to one land card from among them, then put that card on top of your library and the rest on the bottom in a random order.
: Add .
Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.
Getting caught was bad enough, but being rolled to the detention center was by far the worst part.
First strike
Balan has double strike as long as two or more Equipment are attached to it.
: Attach all Equipment you control to Balan.
"I'm feeling generous. I'll let you choose the blade that slays you."
Each player can't cast more than one spell each turn.
Theros's human philosophers were at a marked disadvantage due to their need to pause for things like food or sleep.
Flying
When this creature enters, return a permanent you control to its owner's hand.
"I'll take it from here, soldier."
Exile target creature or enchantment, then return it to the battlefield under its owner's control.
"Sure, I've got nine lives, but that doesn't mean I'm keen to waste one now."
Other Cats you control get +2/+1.
His kind were once hunted to near-extinction. Now, under his protection, they rule the savannah.
Enchant creature
When this Aura enters, draw a card for each Aura you control that's attached to a creature.
Enchanted creature gets +1/+1 for each Aura you control that's attached to a creature.
Choose one —
• Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)
• Destroy target creature with toughness 4 or greater.
Spells your opponents cast that target a creature or planeswalker you control cost more to cast.
[−2]: Create a 2/2 blue Wizard creature token. Draw a card, then discard a card.