When Infectious Host dies, target player loses 2 life.

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

Whenever you cast your second spell each turn, put a +1/+1 counter on Infernal Pet and it gains flying until end of turn.

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

Enchant creature

Creatures you control that are enchanted get +1/+1 and can't be blocked except by creatures with defender.

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.

Whenever one or more artifacts you control enter, Ingenious Artillerist deals that much damage to each opponent.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

: Ingenious Skaab gets +1/-1 until end of turn.

Aftermath (Cast this spell only from your graveyard. Then exile it.)

Injury deals 2 damage to target creature and 2 damage to target player or planeswalker.

Target creature gets +X/+X until end of turn, where X is the number of cards in your hand.

When Inner-Flame Acolyte enters, 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.)

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.

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.

Whenever an opponent casts a green spell, you draw a card.

Cleave (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)

Draw three cards. Your maximum hand size is reduced by three for the rest of the game.

Draw a card for each creature you control with a +1/+1 counter on it. Those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Commander creatures you own have "Creature tokens you control get +2/+2."

Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abilities pays for .)

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

Enchant permanent

Enchanted permanent can't attack, block, or crew Vehicles. Its activated abilities can't be activated unless they're mana abilities.

When Intimidation Campaign enters, each opponent loses 1 life, you gain 1 life, and you draw a card.

Whenever you commit a crime, you may return Intimidation Campaign to its owner's hand. (It returns only from the battlefield. Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

You may look at the top card of your library any time.

You may cast spells from the top of your library by sacrificing a nonland permanent in addition to paying their other costs.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

When this creature enters, target creature you control gets +1/+1 until end of turn.

Creatures don't untap during their controllers' untap steps.

Whenever a creature enters, untap all creatures.

Amass Zombies X, where X is the number of instant and sorcery cards in your graveyard. (Put X +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 Belenon enters, create a 2/2 white and blue Knight creature token with vigilance.

(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 Regatha enters, it deals 4 damage to another target battle or opponent and 1 damage to up to one target creature.

(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 Theros enters, search your library for an Aura, God, or Demigod card, reveal it, put it into your hand, then shuffle.

When Invasive Species enters, return another permanent you control to its owner's hand.

Choose target spell, then flip a coin. If you win the flip, gain control of that spell and you may choose new targets for it. If you lose the flip, counter that spell.

Invigorating Hot Spring enters with four +1/+1 counters on it.

Modified creatures you control have haste. (Equipment, Auras you control, and counters are modifications.)

Remove a +1/+1 counter from Invigorating Hot Spring: Put a +1/+1 counter on target creature you control. Activate only as a sorcery and only once each turn.

Enchant creature

Enchanted creature has "Whenever this creature attacks, create a 4/4 white Angel creature token with flying that's tapped and attacking. Exile that token at end of combat."

Choose one —

• Draw X cards.

• Invoke the Firemind deals X damage to any target.

Counter target spell. Ionize deals 2 damage to that spell's controller.

When Irascible Wolverine enters, 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.)

Double strike (This creature deals both first-strike and regular combat damage.)

At the beginning of each opponent's upkeep, Iron Maiden deals X damage to that player, where X is the number of cards in their hand minus 4.

When Ironclad Slayer enters, you may return target Aura or Equipment card from your graveyard to your hand.

Ironroot Warlord's power is equal to the number of creatures you control.

: Create a 1/1 white Soldier creature token.

When Irreverent Revelers enters, choose one —

• Destroy target artifact.

• Irreverent Revelers gains haste until end of turn.

Deathtouch

Whenever Isareth the Awakener attacks, you may pay . When you do, return target creature card with mana value X from your graveyard to the battlefield with a corpse counter on it. If that creature would leave the battlefield, exile it instead of putting it anywhere else.

Flying

When Ithilien Kingfisher dies, draw a card.

Counter target spell unless its controller pays for each Wizard on the battlefield.

: Add or .

, , Sacrifice Izzet Cluestone: Draw a card.

: Add or .

, , Sacrifice Izzet Locket: Draw two cards.

+2: Each player draws a card.

−1: Target player draws a card.

−10: Target player mills twenty cards.

Kicker

When Jace, Mirror Mage enters, if Jace was kicked, create a token that's a copy of Jace, Mirror Mage, except it's not legendary and its starting loyalty is 1.

+1: Scry 2.

0: Draw a card and reveal it. Remove a number of loyalty counters equal to that card's mana value from Jace, Mirror Mage.

Draw two cards. If you control a Jace planeswalker, draw three cards instead.

Flying

Whenever Jackdaw Savior or another creature you control with flying dies, return another target creature card with lesser mana value from your graveyard to the battlefield.

: Add . When you spend this mana to cast a Dragon creature spell, it enters with an additional +1/+1 counter on it and gains hexproof until your next turn. (It can't be the target of spells or abilities your opponents control.)