Whenever you crank Hypnotic Swirly Disc, target player mills X cards, where X is the number of creatures you control.

When Hyrax Tower Scout enters, untap target creature.

Trample

Whenever Hystrodon deals combat damage to a player, you may draw a card.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Science Teacher — Each Saga spell you cast has replicate. The replicate cost is equal to its mana cost. (When you cast that Saga, copy it for each time you paid its replicate cost. Copies of Saga spells become tokens.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

Whenever another Goblin you control becomes blocked, sacrifice it. If you do, it deals 4 damage to each creature blocking it.

Sacrifice two Mountains: Create two 1/1 red Goblin creature tokens.

: Icatian Infantry gains first strike until end of turn.

: Icatian Infantry gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Icatian Moneychanger enters with three credit counters on it.

When Icatian Moneychanger enters, it deals 3 damage to you.

At the beginning of your upkeep, put a credit counter on Icatian Moneychanger.

Sacrifice Icatian Moneychanger: You gain 1 life for each credit counter on Icatian Moneychanger. Activate only during your upkeep.

First strike; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Whenever Icatian Skirmishers attacks, all creatures banded with it gain first strike until end of turn.

Tap target permanent.

Draw a card.

Enchant artifact or creature

Enchanted permanent doesn't untap during its controller's untap step.

Iceberg enters with X ice counters on it.

: Put an ice counter on Iceberg.

Remove an ice counter from Iceberg: Add .

Whenever Iceberg Titan attacks, you may tap or untap target artifact or creature.

This spell costs less to cast for each snow land you control.

When Icebreaker Kraken enters, artifacts and creatures target opponent controls don't untap during that player's next untap step.

Return three snow lands you control to their owner's hand: Return Icebreaker Kraken to its owner's hand.

Flying

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Icefeather Aven is turned face up, you may return another target creature to its owner's hand.

Protection Fighting Style — When Icewind Stalwart enters, exile up to one target non-Warrior creature you control, then return it to the battlefield under its owner's control.

Whenever an opponent casts an instant spell other than the first instant spell that player casts each turn, Ichneumon Druid deals 4 damage to that player.

If you would roll one or more planar dice, instead roll that many planar dice plus one and ignore one.

: Add .

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When Ichor Rats enters, each player gets a poison counter.

Target creature gets -3/-3 until end of turn.

Cycling (, Discard this card: Draw a card.)

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When Ichor Wellspring enters or is put into a graveyard from the battlefield, draw a card.

Haste

At the beginning of the end step, sacrifice Ichorid.

At the beginning of your upkeep, if Ichorid is in your graveyard, you may exile a black creature card other than Ichorid from your graveyard. If you do, return Ichorid to the battlefield.

Whenever a creature you control enters, if it has one or more oil counters on it, put an oil counter on it.

Creatures you control with oil counters on them get +1/+1.

When Ich-Tekik, Salvage Splicer enters, create a 3/3 colorless Phyrexian Golem artifact creature token.

Whenever an artifact is put into a graveyard from the battlefield, put a +1/+1 counter on Ich-Tekik and a +1/+1 counter on each Golem you control.

Partner (You can have two commanders if both have partner.)

Each +1/+1 counter on a creature you control is also a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

, : Roll two six-sided dice. For each odd result, put a +1/+1 counter on a creature of your choice. Activate only as a sorcery.

As Icon of Ancestry enters, choose a creature type.

Creatures you control of the chosen type get +1/+1.

, : Look at the top three cards of your library. You may reveal a creature card of the chosen type from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

When Icy Prison enters, exile target creature.

At the beginning of your upkeep, sacrifice Icy Prison unless any player pays .

When Icy Prison leaves the battlefield, return the exiled card to the battlefield under its owner's control.

When Idol of Endurance enters, exile all creature cards with mana value 3 or less from your graveyard until Idol of Endurance leaves the battlefield.

, : Until end of turn, you may cast a creature spell from among cards exiled with Idol of Endurance without paying its mana cost.

(: Add or .)

Idyllic Beachfront enters tapped.

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

: Add .

, Pay 1 life: Add .

, , Sacrifice a Desert: Put two -1/-1 counters on target creature an opponent controls. Activate only as a sorcery.

Igneous Inspiration deals 3 damage to any target.

Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Ignite Disorder deals 3 damage divided as you choose among one, two, or three target white and/or blue creatures.

Exile the top three cards of your library. Until the end of your next turn, you may play those cards. If this spell was cast from a graveyard, you may play cards this way without paying their mana costs.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever Ignoble Soldier becomes blocked, prevent all combat damage that would be dealt by it this turn.

Bushido 2 (Whenever this creature blocks or becomes blocked, it gets +2/+2 until end of turn.)

, Sacrifice a Samurai: Samurai creatures you control gain double strike until end of turn.

Menace

Whenever a creature you control deals combat damage to a player, you gain life equal to that creature's toughness.

Partner (You can have two commanders if both have partner.)

At the beginning of your upkeep, Ill-Gotten Inheritance deals 1 damage to each opponent and you gain 1 life.

, Sacrifice Ill-Gotten Inheritance: It deals 4 damage to target opponent and you gain 4 life.

Ceremorphosis — When Illithid Harvester enters, turn any number of target tapped nontoken creatures face down. They're 2/2 Horror creatures.

Trample

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

Discard any number of cards, then draw that many cards. Then if there are seven or more cards in your graveyard, create a 3/2 red and white Spirit creature token.

Secrets of the Soul — , Sacrifice another creature: Add an amount of equal to the sacrificed creature's mana value.

Enchant creature

Enchanted creature gets +4/+4.

When enchanted creature becomes the target of a spell or ability, sacrifice Illusionary Armor.

Draft Illusionary Informant face up.

During the draft, you may turn Illusionary Informant face down. If you do, look at the next card drafted by a player of your choice.

Flying

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.)

At the beginning of your upkeep, choose a land type. Illusionary Presence gains landwalk of the chosen type until end of turn. (It can't be blocked as long as defending player controls a land of that type.)

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.)

As Illusionary Terrain enters, choose two basic land types.

Basic lands of the first chosen type are the second chosen type.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy.

Equip

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 Illusions of Grandeur enters, you gain 20 life.

When Illusions of Grandeur leaves the battlefield, you lose 20 life.

Cast this spell only if you've cast another spell this turn.

Flying

Enchant creature

You control enchanted creature.

Whenever a creature an opponent controls enters, attach Illusory Gains to that creature.

, Exile Illustrious Historian from your graveyard: Create a tapped 3/2 red and white Spirit creature token.