(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When Invasion of Pyrulea enters the battlefield, scry 3, then reveal the top card of your library. If it's a land or double-faced card, draw a card.

When Invasive Species enters the battlefield, return another permanent you control to its owner's hand.

Choose target spell, then flip a coin. If you win the flip, gain control of that spell and you may choose new targets for it. If you lose the flip, counter that spell.

Invigorating Hot Spring enters the battlefield with four +1/+1 counters on it.

Modified creatures you control have haste. (Equipment, Auras you control, and counters are modifications.)

Remove a +1/+1 counter from Invigorating Hot Spring: Put a +1/+1 counter on target creature you control. Activate only as a sorcery and only once each turn.

Whenever an opponent casts a creature spell that doesn't share a color with a creature you control, counter that spell unless that player pays , where X is its mana value.

Landfall — Whenever a land enters the battlefield under your control, you may put a quest counter on Ior Ruin Expedition.

Remove three quest counters from Ior Ruin Expedition and sacrifice it: Draw two cards.

Trample

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Paradox — Whenever you cast a spell from anywhere other than your hand, create a 2/2 red Alien Warrior creature token.

Create a token that's a copy of target creature you control, except the token has flying and it isn't legendary.

Iron Apprentice enters the battlefield with a +1/+1 counter on it.

When Iron Apprentice dies, if it had counters on it, put those counters on target creature you control.

Reach

Whenever you cast your second spell each turn, Iron-Fist Pulverizer deals 2 damage to target opponent. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Target creature must be blocked this turn if able.

Draw a card.

Shroud (This creature can't be the target of spells or abilities.)

Isleback Spawn gets +4/+8 as long as a library has twenty or fewer cards in it.

Isolated Chapel enters the battlefield tapped unless you control a Plains or a Swamp.

: Add or .

Flying

Whenever a creature attacks you or a planeswalker you control, you may draw a card.

Return target creature card from your graveyard to the battlefield. Suspect it. (It has menace and can't block.)

Flying

Whenever a player casts a spell that targets only a single creature other than Ivy, Gleeful Spellthief, you may copy that spell. The copy targets Ivy. (A copy of an Aura spell becomes a token.)

, , Sacrifice Ixalli's Keeper: Target creature gets +5/+5 and gains trample until end of turn.

Face-down creatures get +1/+1.

: Turn target face-down creature face up.

+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."

+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.

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

: Put a loyalty counter on target Jace planeswalker.

Whenever Jackal Pup is dealt damage, it deals that much damage to you.

: 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.

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

Whenever Jagged Poppet is dealt damage, discard that many cards.

Hellbent — Whenever Jagged Poppet deals combat damage to a player, if you have no cards in hand, that player discards cards equal to the damage.

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.

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

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.

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.

Flying, vigilance

Whenever Jelenn Sphinx attacks, other attacking creatures get +1/+1 until end of turn.

Flying, vigilance

At the beginning of your end step, if you haven't cast a spell from your hand this turn, draw a card.

First strike, haste

: Jeska, Warrior Adept deals 1 damage to any target.

When Jester's Scepter enters the battlefield, exile the top five cards of target player's library face down. You may look at those cards for as long as they remain exiled.

, , Put a card exiled with Jester's Scepter into its owner's graveyard: Counter target spell if it has the same name as that card.

Alpha strike (This creature has first strike as long as it's blocking or being blocked by a creature that comes after it alphabetically.

Whenever you cast a historic spell, draw a card. (Artifacts, legendaries, and Sagas are historic.)

You may look at the top card of your library any time.

Once each turn, you may cast an instant or sorcery spell from the top of your library. (You still pay its costs. Timing rules still apply.)

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

Kicker (You may pay an additional as you cast this spell.)

Scry 2, then draw a card. If this spell was kicked, you may put a land card from your hand onto the battlefield.

Whenever you attack with one or more creatures with power 4 or greater, create a Treasure token.

, Sacrifice a Treasure: Jolene, Plundering Pugilist deals 1 damage to any target.

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

Level up (: Put a level counter on this. Level up only as a sorcery.)

LEVEL 1-4

1/2

: Add .

LEVEL 5+

1/4

Elves you control have ": Add ."

When Joyful Stormsculptor enters the battlefield, create two 1/1 blue and red Elemental creature tokens.

Whenever you cast a spell that has convoke, Joyful Stormsculptor deals 1 damage to each opponent and each battle they protect.

(As this Saga enters and after your draw step, add a lore counter.)

I — Create a 1/1 green Human Monk creature token with ": Add ."

II — Put a +1/+1 counter on each of up to two target creatures.

III — Exile this Saga, then return it to the battlefield transformed under your control.

Flying

As Jumbo Imp enters the battlefield, roll a six-sided die. Jumbo Imp enters the battlefield 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.

: Add .

, , Sacrifice Jund Panorama: Search your library for a basic Swamp, Mountain, or Forest card, put it onto the battlefield tapped, then shuffle.

, : Create a 0/1 green Wall creature token with defender named Wood.

Sacrifice a token named Wood: Add .

As long as Juniper Order Advocate is untapped, green creatures you control get +1/+1.

Whenever another creature enters the battlefield under your control, put a +1/+1 counter on that creature and a +1/+1 counter on Juniper Order Ranger.

Whenever a nontoken artifact enters the battlefield under your control, exile a random nonland artifact card with lesser mana value from your library. You may cast that card until the end of your next turn.