Flying

At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life.

At the beginning of your end step, you may sacrifice a creature. If you do, look at the top X cards of your library, where X is that creature's mana value. You may put a creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Inescapable Brute must be blocked if able.

: Infected Vermin deals 1 damage to each creature and each player.

Threshold — : Infected Vermin deals 3 damage to each creature and each player. Activate only if seven or more cards are in your graveyard.

Enchant player

Spells you cast that target enchanted player cost less to cast.

At the beginning of enchanted player's upkeep, that player loses 1 life and you gain 1 life.

When Infectious Host dies, target player loses 2 life.

Enchant creature

Enchanted creature gets +2/-1.

When enchanted creature dies, choose a creature at random Infectious Rage can enchant. Return Infectious Rage to the battlefield attached to that creature.

Draw four cards. You lose half your life, rounded up.

At the beginning of your upkeep, sacrifice two Swamps. If you can't, tap Infernal Denizen, and an opponent may gain control of a creature you control of their choice for as long as Infernal Denizen remains on the battlefield.

: Gain control of target creature for as long as Infernal Denizen remains on the battlefield.

Destroy target creature. You lose 2 life.

Flying

Whenever you cast a Spirit or Arcane spell, target player reveals their hand and discards all cards with that spell's mana value.

Choose an opponent. You and that player each sacrifice a creature. Each player who sacrificed a creature this way draws two cards.

Choose an opponent. Return a creature card from your graveyard to the battlefield, then that player returns a creature card from their graveyard to the battlefield.

As an additional cost to cast this spell, sacrifice a creature.

Add .

Enchant creature

Enchanted creature gets +2/+0 and has "When this creature dies, draw a card."

Flying, first strike

, Reveal Infernal Spawn of Evil from your hand, Say "It's coming": Infernal Spawn of Evil deals 1 damage to target opponent or planeswalker. Activate only during your upkeep and only once each turn.

, Sacrifice a nontoken permanent: Draw a card.

Flying, first strike, trample, haste

This spell costs less to cast for each card you've revealed this turn.

When Infernius Spawnington III, Esq. enters the battlefield, you may say "I'm here." If you do, it deals 3 damage to target player.

Whenever Inferno Elemental blocks or becomes blocked by a creature, Inferno Elemental deals 3 damage to that creature.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

At the beginning of each end step, if Inferno Hellion attacked or blocked this turn, its owner shuffles it into their library.

This spell can't be countered.

Flying, haste

: Inferno of the Star Mounts gets +1/+0 until end of turn. When its power becomes 20 this way, it deals 20 damage to any target.

: Inferno Titan gets +1/+0 until end of turn.

Whenever Inferno Titan enters the battlefield or attacks, it deals 3 damage divided as you choose among one, two, or three targets.

All creatures get -2/-2 until end of turn.

Choose a creature card name. Search target opponent's graveyard, hand, and library for any number of cards with that name and exile them. Then that player shuffles.

Inflame deals 2 damage to each creature dealt damage this turn.

Until end of turn, target creature gains deathtouch and "When this creature dies, return it to the battlefield tapped under its owner's control."

You gain 2 life.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever a Ninja you control deals combat damage to a player, draw a card.

Flying

: Exile target creature card from a graveyard. Put a +1/+1 counter on Inherited Fiend.

: Initiate of Blood deals 1 damage to target creature that was dealt damage this turn. When that creature dies this turn, flip Initiate of Blood.

When Injector Crocodile dies, incubate 3. (Create an Incubator token with three +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

Swampcycling (, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Ink-Eyes, Servant of Oni deals combat damage to a player, you may put target creature card from that player's graveyard onto the battlefield under your control.

: Regenerate Ink-Eyes.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

: Each unblocked creature has base power and toughness 4/1 until end of turn.

Flying

: Inkrise Infiltrator gets +2/+2 until end of turn.

Whenever a player casts an instant or sorcery spell, if that spell targets only Ink-Treader Nephilim, copy the spell for each other creature that spell could target. Each copy targets a different one of those creatures.

Add for each card in your hand.

When Inner-Flame Acolyte enters the battlefield, target creature gets +2/+0 and gains haste until end of turn.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Each player sacrifices a creature.

At the beginning of your upkeep, any opponent may sacrifice a creature. If no one does, transform Innocent Traveler.

Target player reveals their hand. Inquisition deals damage to that player equal to the number of white cards in their hand.

You may reveal the first card you draw each turn as you draw it. Whenever you reveal an instant or sorcery card this way, create Cherubael, a legendary 4/4 black Demon creature token with flying.

Whenever Inquisitor Eisenhorn deals combat damage to a player, investigate that many times. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Spree (Choose one or more additional costs.)

+ — Search your library for a card, then shuffle and put that card on top.

+ — Target player draws three cards and loses 3 life.

Flying, lifelink

Kicker

Choose one. If this spell was kicked, choose any number instead.

• Target opponent discards two cards.

• Return target creature card with mana value 2 or less from your graveyard to the battlefield.

• Destroy target creature with mana value 3 or less.

When Insidious Bookworms dies, you may pay . If you do, target player discards a card at random.

Creature tokens you control have ": Add one mana of any color."

Whenever one or more creature cards leave your graveyard, create a 0/1 green Plant creature token, then put a +1/+1 counter on each Plant you control.

Menace (This creature can't be blocked except by two or more creatures.)

Discard a card, Sacrifice Insolent Neonate: Draw a card.

Target player gains 5 life, Inspired Ultimatum deals 5 damage to any target, then you draw five cards.

, , Discard a card: Creatures target player controls attack this turn if able.

Enchant creature

Enchanted creature has "At the beginning of your end step, sacrifice this creature unless it attacked this turn."

Enchant creature

At the beginning of the end step of enchanted creature's controller, Insubordination deals 2 damage to that player unless that creature attacked this turn.

Damage can't be prevented this turn. If a source you control would deal damage this turn, it deals double that damage instead.