When Ixalli's Diviner enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

: Add one mana of any color. Spend this mana only to cast a Dinosaur spell or activate an ability of a Dinosaur source.

Face-down creatures get +1/+1.

: Turn target face-down creature face up.

Flying

Iymrith, Desert Doom has ward as long as it's untapped.

Whenever Iymrith deals combat damage to a player, draw a card. Then if you have fewer than three cards in hand, draw cards equal to the difference.

Izzet Boilerworks enters the battlefield tapped.

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

: Add .

: Add or .

, , Sacrifice Izzet Cluestone: Draw a card.

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

Haste

: Izzet Staticaster deals 1 damage to target creature and each other creature with the same name as that creature.

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: Whenever one or more creatures you control deal combat damage to a player this turn, draw a card, then discard a card.

−2: Create a 2/2 blue Illusion creature token with "When this creature becomes the target of a spell, sacrifice it."

−5: Create two tokens that are copies of Jace, Cunning Castaway, except they're not legendary.

+2: Look at the top card of target player's library. You may put that card on the bottom of that player's library.

0: Draw three cards, then put two cards from your hand on top of your library in any order.

−1: Return target creature to its owner's hand.

−12: Exile all cards from target player's library, then that player shuffles their hand into their library.

: Draw a card, then discard a card. If there are five or more cards in your graveyard, exile Jace, Vryn's Prodigy, then return him to the battlefield transformed under his owner's control.

, : Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Whenever you draw a card, you may have target player mill a card.

Flying

When Jace's Mindseeker enters the battlefield, target opponent mills five cards. You may cast an instant or sorcery spell from among them without paying its mana cost.

Whenever you draw a card, put a +1/+1 counter on Jace's Projection.

: Put a loyalty counter on target Jace planeswalker.

Instant and sorcery spells you cast cost less to cast.

Whenever you cast an instant or sorcery spell, scry 1.

As long as you control a Jace planeswalker, Jace's Sentinel gets +1/+0 and can't be blocked.

: Draw a card, then exile a card from your hand face down. You may look at that card for as long as it remains exiled. You may pay . If you do, transform Jacob Hauken, Inspector.

When Jaddi Lifestrider enters the battlefield, you may tap any number of untapped creatures you control. You gain 2 life for each creature tapped this way.

When Jade Seedstones enters the battlefield, distribute three +1/+1 counters among one, two, or three target creatures you control.

Craft with creature (, Exile this artifact, Exile a creature you control or a creature card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

When Jadecraft Artisan enters the battlefield, target creature gets +2/+2 until end of turn.

Counter target spell if it shares a color with a creature you control.

When Jadelight Spelunker enters the battlefield, it explores X times. (To have it explore, reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard.)

Jagged Barrens enters the battlefield tapped.

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

: Add or .

Flying

Search your library for up to X basic land cards, where X is the number of creatures attacking you, put those cards onto the battlefield tapped, then shuffle.

Prevent all combat damage that would be dealt this turn.

, , Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

Haste

, Sacrifice an artifact creature: Create two Treasure tokens.

, Sacrifice a noncreature artifact: Create two 1/1 colorless Construct artifact creature tokens.

, : Untap target creature.

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.

Remove a ki counter from Jaraku the Interloper: Counter target spell unless its controller pays .

(CARDNAME isn't a spell, it's affected by summoning sickness, it's blue, and it has ": Add .")

CARDNAME enters the battlefield tapped.

CARDNAME doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap CARDNAME.

: 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.

Whenever a Zombie or Mutant you control dies, if its power was different from its base power, draw a card.

Come Fly With Me — , Sacrifice a creature: Put a +1/+1 counter on target creature you control. It gains flying until end of turn.

Double strike

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

Jaws of Stone deals X damage divided as you choose among any number of targets, where X is the number of Mountains you control as you cast this spell.

, , 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.

Jaya's Greeting deals 3 damage to target creature. Scry 1.

Flying, haste

Whenever Jaya's Phoenix deals combat damage to a player or planeswalker, copy the next loyalty ability you activate this turn when you activate it. You may choose new targets for the copy.

Whenever you cast a planeswalker spell, you may return Jaya's Phoenix from your graveyard to the battlefield.

When Jeering Homunculus enters the battlefield, you may goad target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Companion — No card in your starting deck has more than one of the same mana symbol in its mana cost. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)

: Add . This mana can't be spent to pay generic mana costs.

Flying

When Jeleva, Nephalia's Scourge enters the battlefield, each player exiles the top X cards of their library, where X is the amount of mana spent to cast Jeleva.

Whenever Jeleva attacks, you may cast an instant or sorcery spell from among cards exiled with Jeleva without paying its mana cost.

Flying

: Put a +1/+1 counter on Jenara, Asura of War.

Jeska, Thrice Reborn enters the battlefield 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

Whenever you cast a noncreature spell, creatures you control get +1/+1 until end of turn. Untap those creatures.

Whenever you cast a noncreature spell, you may draw a card. If you do, discard a card.

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

Defender

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

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever Jeskai Elder deals combat damage to a player, you may draw a card. If you do, discard a card.

Enchant creature

Enchanted creature gets +2/+2.

Enchanted creature has flying as long as you control a red or white permanent.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)