Destroy all enchantments.

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

: Hyalopterous Lemure gets -1/-0 and gains flying until end of turn.

You may exert Hydra Trainer as it attacks. When you do, target creature gets +X/+X until end of turn, where X is the number of counters on permanents you control. (An exerted creature won't untap during your next untap step.)

: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)

, Sacrifice Hydromorph Guardian: Counter target spell that targets a creature you control.

, : Tap target creature. This ability costs less to activate during your turn.

, Sacrifice Hylda's Crown of Winter: Draw a card for each tapped creature your opponents control.

Enchant creature

Enchanted creature has ": This creature deals 1 damage to any target."

: Return Hypervolt Grasp to its owner's hand.

, Discard a card: Prevent the next 3 damage that would be dealt to any target this turn.

, Sacrifice Hypochondria: Prevent the next 3 damage that would be dealt to any target this turn.

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.)

: Target Soldier creature gets +1/+0 until end of turn.

: Target creature gets +1/+1 until end of turn.

Icatian Store enters tapped.

You may choose not to untap Icatian Store during your untap step.

At the beginning of your upkeep, if Icatian Store is tapped, put a storage counter on it.

, Remove any number of storage counters from Icatian Store: Add for each storage counter removed this way.

You may choose not to untap Ice Floe during your untap step.

: Tap target creature without flying that's attacking you. It doesn't untap during its controller's untap step for as long as Ice Floe remains tapped.

Iceberg enters with X ice counters on it.

: Put an ice counter on Iceberg.

Remove an ice counter from Iceberg: Add .

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.

Trample

Remove a ki counter from Ichiga, Who Topples Oaks: Target creature gets +2/+2 until end of turn.

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

: Add .

Planeswalkers you control have "0: Proliferate" and "–12: Take an extra turn after this one."

Whenever you cast a noncreature spell, choose a counter on target permanent. Put an additional counter of that kind on that permanent.

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.

: Draw a card if you have no cards in hand.

, : Create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this creature: Add ."

Whenever another Eldrazi you control dies, put a +1/+1 counter on Idol of False Gods.

As long as Idol of False Gods has eight or more +1/+1 counters on it, it's a 0/0 creature in addition to its other types and it has annihilator 2.

Flash

When Idol of the Deep King enters, it deals 2 damage to any target.

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

(: Add .)

Idyllic Grange enters tapped unless you control three or more other Plains.

When Idyllic Grange enters untapped, put a +1/+1 counter on target creature you control.

: 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 Golem gains trample until end of turn.

Ignition Team enters with X +1/+1 counters on it, where X is the number of tapped lands on the battlefield.

, Remove a +1/+1 counter from Ignition Team: Target land becomes a 4/4 red Elemental creature until end of turn. It's still a land.

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.

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.

Whenever Ill-Tempered Loner is dealt damage, it deals that much damage to any target.

: Ill-Tempered Loner gets +2/+0 until end of turn.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Enchant creature

Enchanted creature has flying.

, Sacrifice Illuminated Wings: Draw a card.

: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on . If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery.

: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Flying

, : Exile the top X cards of your library and put a study counter on each of them. Then you may put a card you own in exile with a study counter on it into your hand.

Hosted creatures get +2/+0 and have haste.

Host (: Host target creature at this Realm. A Realm can host any number of creatures. Host only as a sorcery.)

Immersturm Skullcairn enters tapped.

: Add .

, , Sacrifice Immersturm Skullcairn: It deals 3 damage to target player. That player discards a card. Activate only as a sorcery.

Enchant creature

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

Enchanted creature has ", Discard a card: Untap this creature."

Whenever an opponent activates an ability of an artifact, creature, or land that isn't a mana ability, Immolation Shaman deals 1 damage to that player.

: Immolation Shaman gets +3/+3 and gains menace until end of turn.

You may choose not to untap Immovable Rod during your untap step.

Whenever Immovable Rod becomes untapped, venture into the dungeon.

, : For as long as Immovable Rod remains tapped, another target permanent loses all abilities and can't attack or block.

Whenever Imperial Recovery Unit attacks, return target creature or Vehicle card with mana value 2 or less from your graveyard to your hand.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

, Sacrifice Implement of Combustion: It deals 1 damage to target player or planeswalker.

When Implement of Combustion is put into a graveyard from the battlefield, draw a card.

, Sacrifice Implement of Ferocity: Put a +1/+1 counter on target creature. Activate only as a sorcery.

When Implement of Ferocity is put into a graveyard from the battlefield, draw a card.

, Sacrifice Implement of Malice: Target player discards a card. Activate only as a sorcery.

When Implement of Malice is put into a graveyard from the battlefield, draw a card.

Vigilance

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

Whenever you draw your second card each turn, create a 1/1 blue Faerie creature token with flying.

: Draw a card, then discard a card.

Enchant creature

Enchanted creature gets +2/+5.

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

When Impulsive Pilferer dies, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Creatures you control get +1/+1.

: Exile target nonland permanent you don't control until In the Trenches leaves the battlefield. Activate only as a sorcery and only once.

Eminence — Whenever another nontoken Wizard you control enters, if Inalla, Archmage Ritualist is in the command zone or on the battlefield, you may pay . If you do, create a token that's a copy of that Wizard. The token gains haste. Exile it at the beginning of the next end step.

Tap five untapped Wizards you control: Target player loses 7 life.

: Incendiary Oracle gets +1/+0 until end of turn.

If a creature dealt damage by Incendiary Oracle this turn would die, exile it instead.