Enchant creature

When Hydra's Growth enters, put a +1/+1 counter on enchanted creature.

At the beginning of your upkeep, double the number of +1/+1 counters on enchanted creature.

As Hydroelectric Laboratory enters, you may pay 3 life. If you don't, it enters tapped.

: Add .

Target land becomes a 3/3 Elemental creature with flying until end of turn. It's still a land.

Attacking creatures get -2/-0 until end of turn.

Draw a card.

Flying

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

Whenever you tap an untapped creature an opponent controls, you may pay . When you do, choose one —

• Create a 4/4 white and blue Elemental creature token.

• Put a +1/+1 counter on each creature you control.

• Scry 2, then draw a card.

Put target creature card from a graveyard onto the battlefield under your control.

Suspend 3—

Starting with you, each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield. Repeat this process until no one puts a card onto the battlefield.

Flying, haste

You may cast sorcery spells as though they had flash. (You may cast them any time you could cast an instant.)

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

Target player discards a card. If this spell was kicked, that player discards three cards instead.

Target creature perpetually gets -2/-0.

Target creature gets -2/-0 until end of turn.

Flying

Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.

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

, 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.

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 Ian the Reckless attacks, if it's modified, you may have it deal damage equal to its power to you and any target. (Equipment, Auras you control, and counters are modifications.)

, , Discard a card: Create two 1/1 white Citizen creature tokens.

Icatian Javelineers enters with a javelin counter on it.

, Remove a javelin counter from Icatian Javelineers: It deals 1 damage to any target.

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.

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

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.

Create four 1/1 white Citizen creature tokens.

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

When enchanted creature becomes the target of a spell or ability, destroy Ice Cage.

Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell. <I>(Mana cost includes color.)</I>

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

This spell costs less to cast if it's bargained.

Counter target spell.

Destroy target land.

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

When Icefall Regent enters, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Icefall Regent.

Spells your opponents cast that target Icefall Regent cost more to cast.

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.

: Icehide Troll gets +2/+0 and gains indestructible until end of turn. Tap it. (Damage and effects that say "destroy" don't destroy it. can be paid with one mana from a snow source.)

Flying

When this creature enters, draw a card, then discard a card.

Vigilance

Whenever Icewrought Sentry attacks, you may pay . When you do, tap target creature an opponent controls.

Whenever you tap an untapped creature an opponent controls, Icewrought Sentry gets +2/+1 until end of turn.

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.

, : Tap target artifact, creature, or land.

Draw three cards. Discard three cards at the beginning of the next end step.

Whenever Identity Thief attacks, you may exile another target nontoken creature. If you do, Identity Thief becomes a copy of that creature until end of turn. Return the exiled card to the battlefield under its owner's control at the beginning of the next end step.