Enchant creature

Enchanted creature gets +2/+2, has vigilance, and can block an additional creature each combat.

: Iridescent Blademaster gets +2/+2 until end of turn.

Enchant creature you control

When Iroas's Blessing enters, it deals 4 damage to target creature or planeswalker an opponent controls.

Enchanted creature gets +1/+1.

Haste

Iron-Barb Hellion can't block.

Trample, haste

Channel — , Discard Ironhoof Boar: Target creature gets +3/+1 and gains trample until end of turn.

Target creature must be blocked this turn if able.

Draw a card.

Reach

Other Spiders you control get +1/+2.

, Exile two cards from your graveyard: Draft a card from Ishkanah, Broodmother's spellbook.

Flying

Whenever Isperia the Inscrutable deals combat damage to a player, choose a card name. That player reveals their hand. If a card with the chosen name is revealed this way, search your library for a creature card with flying, reveal it, put it into your hand, then shuffle.

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)

Whenever an opponent sacrifices a nontoken permanent, put that card onto the battlefield under your control.

When Ixalan's Binding enters, exile target nonland permanent an opponent controls until Ixalan's Binding leaves the battlefield.

Your opponents can't cast spells with the same name as the exiled card.

Izzet Boilerworks enters tapped.

When Izzet Boilerworks enters, return a land you control to its owner's hand.

: Add .

Cast this spell only after combat.

Gain control of target nonartifact, nonblack creature that attacked you this turn and put a -1/-0 counter on it.

+1: Up to one target creature gets -2/-0 until your next turn.

−3: You may cast target instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead.

−9: You get an emblem with "Whenever you cast a spell, target opponent mills five cards."

Partner with Evie Frye (When this creature enters, target player may put Evie into their hand from their library, then shuffle.)

Whenever one or more Assassins you control deal combat damage to a player, exile up to one target Assassin card or card with freerunning from your graveyard. If you do, copy it. You may cast the copy.

When Jade Bearer enters, put a +1/+1 counter on another target Merfolk you control.

Jagged Barrens enters tapped.

When Jagged Barrens enters, it deals 1 damage to target opponent.

: Add or .

Spree (Choose one or more additional costs.)

+ — Put a +1/+1 counter on target creature. It can't be blocked this turn.

+ — Target artifact or creature's owner puts it on the top or bottom of their library.

Whenever a creature you control dies, put two eyeball counters on Jar of Eyeballs.

, , Remove all eyeball counters from Jar of Eyeballs: Look at the top X cards of your library, where X is the number of eyeball counters removed this way. Put one of them into your hand and the rest on the bottom of your library in any order.

: Add . Spend this mana only to cast creature spells with no abilities.

Creatures you control with no abilities can't be blocked by creatures with abilities.

Double strike

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

, , Discard a card: Create a token that's a copy of another target creature you control. It gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step. Activate only as a sorcery.

Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

, , Discard a card: Destroy target blue permanent.

, , Discard a card: Jaya Ballard, Task Mage deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

, , Discard a card: Jaya Ballard deals 6 damage to each creature and each player.

Jeska, Thrice Reborn enters with a loyalty counter on her for each time you've cast a commander from the command zone this game.

0: Choose target creature. Until your next turn, if that creature would deal combat damage to one of your opponents, it deals triple that damage to that player instead.

−X: Jeska, Thrice Reborn deals X damage to each of up to three targets.

Jeska, Thrice Reborn can be your commander.

Partner

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

Defender

When Jeskai Barricade enters, you may return another target creature you control to its owner's hand.

Remove Jeweled Bird from your deck before playing if you're not playing for ante.

: Ante Jeweled Bird. If you do, put all other cards you own from the ante into your graveyard, then draw a card.

: Prevent the next 1 damage that would be dealt to any target this turn.

: Target creature can't be blocked this turn.

: Choose target permanent you control or suspended card you own. If that permanent or card has a time counter on it, you may remove a time counter from it or put another time counter on it.

: Search your library for a card, put that card into your hand, then shuffle.

, , Discard two cards: All lands target player controls become 3/3 creatures until end of turn. They're still lands.

Jorubai Murk Lurker gets +1/+1 as long as you control a Swamp.

: Target creature gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)

At the beginning of combat on your turn, you may pay . If you do, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When you play a card, sacrifice Juju Bubble.

: You gain 1 life.

Flying

As Jumbo Imp enters, roll a six-sided die. Jumbo Imp enters with a number of +1/+1 counters on it equal to the result.

At the beginning of your upkeep, roll a six-sided die and put a number of +1/+1 counters on Jumbo Imp equal to the result.

At the beginning of your end step, roll a six-sided die and remove a number of +1/+1 counters from Jumbo Imp equal to the result.

As long as you control another multicolored permanent, Jund Hackblade gets +1/+1 and has haste.

Jungle Basin enters tapped.

When Jungle Basin enters, sacrifice it unless you return an untapped Forest you control to its owner's hand.

: Add .

Trample

Whenever you expend 4, Junkblade Bruiser gets +2/+1 until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

Kabira Crossroads enters tapped.

When Kabira Crossroads enters, you gain 2 life.

: Add .

When Kabira Outrider enters, target creature gets +1/+1 until end of turn for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Kabira Takedown deals damage equal to the number of creatures you control to target creature or planeswalker.

Choose any number of target players or planeswalkers. For each of them, reveal cards from the top of your library until you reveal a nonland card, Kaboom deals damage equal to that card's mana value to that player or planeswalker, then you put the revealed cards on the bottom of your library in any order.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

During your turn, as long as Kaito has one or more loyalty counters on him, he's a 3/4 Ninja creature and has hexproof.

+1: You get an emblem with "Ninjas you control get +1/+1."

0: Surveil 2. Then draw a card for each opponent who lost life this turn.

−2: Tap target creature. Put two stun counters on it.

, : Destroy target creature. If that creature dies this way, create a black Vampire creature token. Its power is equal to that creature's power and its toughness is equal to that creature's toughness.

Whenever an opponent casts a noncreature spell, that player loses 2 life and you gain 2 life.

Partner with Laurine, the Diversion (When this creature enters, target player may put Laurine into their hand from their library, then shuffle.)

Lifelink

Whenever a creature an opponent controls dies, you gain 1 life and create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Whenever a modified creature you control attacks, exile the top card of your library. You may play that card this turn. (Equipment, Auras you control, and counters are modifications.)

Whenever you cast a spell from exile, put a +1/+1 counter on target creature you control.

Whenever you attack, target attacking creature can't be blocked this turn. It connives. Then choose another attacking creature with lesser power. That creature gains double strike until end of turn. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)

: Add . Spend this mana only to foretell a card from your hand or cast an instant or sorcery spell.

: Add .

, : Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Whenever Kashi-Tribe Reaver deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

: Regenerate Kashi-Tribe Reaver.

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, vigilance, haste

Whenever you cast another spell that has convoke, scry 2, then draw a card.