Cumulative upkeep—Pay 2 life. (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.)

Prevent all damage that would be dealt to creatures you control.

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.)

, : Tap target creature.

Whenever you cast a Spirit or Arcane spell, untap Innocence Kami.

Whenever Innocent Bystander is dealt 3 or more damage, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Flash

Flying

When you cast this spell, draw a card.

Vigilance

When Inquisitor Captain enters the battlefield, if there are twenty or more creature cards with mana value 3 or less among cards in your graveyard, hand, and library, seek two creature cards with mana value 3 or less. Put one of them onto the battlefield and shuffle the other into your library.

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.

Kicker

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

• Put two +1/+1 counters on target creature.

• Target player gains X life, where X is the greatest power among creatures they control.

• Target creature you control fights target creature you don't control.

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 Inside Source enters the battlefield, create a 2/2 white and blue Detective creature token.

, : Target Detective you control gets +2/+0 and gains vigilance until end of turn. Activate only as a sorcery.

Creatures you control get +2/+1 until end of turn.

When Inspiring Captain enters the battlefield, creatures you control get +1/+1 until end of turn.

Whenever another creature with power 2 or less enters the battlefield under your control, you gain 1 life and draw a card.

Put a -1/-1 counter on target creature.

Draw a card.

Devour Intellect — When Intellect Devourer enters the battlefield, each opponent exiles a card from their hand until Intellect Devourer leaves the battlefield.

Body Thief — You may play lands and cast spells from among cards exiled with Intellect Devourer. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it.

: Add one mana of any color.

, : Draw X cards, where X is the number of Bobbleheads you control.

Counter target activated ability from an artifact, creature, enchantment, or land. That permanent's activated abilities can't be activated this turn. <I>(Mana abilities can't be targeted.)</I>

Draw a card.

Whenever you cast a planeswalker spell, you gain 1 life.

: Add .

, : Add two mana of different colors. Spend this mana only to cast planeswalker spells.

Whenever you attack, you may discard a card. When you do, put a +1/+1 counter on target attacking creature. It gains trample until end of turn.

Whenever you discard one or more cards, exile the top card of your library. You may play that card until your next end step.

Exile two target artifacts.

Exile target nonland permanent. Its controller draws a card.

Vigilance

When Intrusive Packbeast enters the battlefield, tap up to two target creatures your opponents control.

When Invading Manticore enters the battlefield, amass Zombies 2. (Put two +1/+1 counters on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

(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 Mercadia enters the battlefield, you may discard a card. If you do, draw two cards.

(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 Ravnica enters the battlefield, exile target nonland permanent an opponent controls that isn't exactly two colors.

Inventor's Apprentice gets +1/+1 as long as you control an artifact.

Count the number of cards in your library. Your life total becomes that number.

Whenever you cast an instant or sorcery spell from your hand, you may copy that spell. You may choose new targets for the copy.

Return target permanent card from your graveyard to the battlefield, then distribute four +1/+1 counters among any number of creatures and/or Vehicles target player controls.

Create two 4/5 green Spirit creature tokens. For each of them, put your choice of a vigilance counter, a reach counter, or a trample counter on it.

When Irascible Wolverine enters the battlefield, exile the top card of your library. Until end of turn, you may play that card.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Whenever you draw your second card each turn, Irencrag Pyromancer deals 3 damage to any target.

Flying, protection from all colors

Flying

When Iridescent Drake enters the battlefield, put target Aura card from a graveyard onto the battlefield under your control attached to Iridescent Drake.

Indestructible

As long as your devotion to red and white is less than seven, Iroas isn't a creature.

Creatures you control have menace.

Prevent all damage that would be dealt to attacking creatures you control.

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.

Iron Verdict deals 5 damage to target tapped creature.

Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

When Ironclad Revolutionary enters the battlefield, you may sacrifice an artifact. If you do, put two +1/+1 counters on Ironclad Revolutionary and each opponent loses 2 life.

Ironclaw Buzzardiers can't block creatures with power 2 or greater.

: Ironclaw Buzzardiers gains flying until end of turn.

Ironclaw Orcs can't block creatures with power 2 or greater.

Ironfist Crusher can block any number of creatures.

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

If a creature would deal combat damage to Ironscale Hydra, prevent that damage and put a +1/+1 counter on Ironscale Hydra.

Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

Changeling (This card is every creature type.)

When Irregular Cohort enters the battlefield, create a 2/2 colorless Shapeshifter creature token with changeling.

Whenever an opponent casts a Spirit or Arcane spell, Ishi-Ishi, Akki Crackshot deals 2 damage to that player.

If you would draw a card during your draw step, instead you may skip that draw. If you do, until your next turn, you can't be attacked except by creatures with flying and/or islandwalk.

Imprint — When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.

, : You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

: Add .

, : Scry 1, then you may reveal the top card of your library. If a basic land card is revealed this way, put it onto the battlefield tapped. Activate only if an opponent controls at least two more lands than you.

Whenever an opponent casts a creature spell, that player loses 2 life unless they pay .

Flying

When Isperia's Skywatch enters the battlefield, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)