Trample
When Imperfect Fugisaur enters, you may sacrifice an artifact. If you do, it gains haste until end of turn.
Whenever Imperfect Fugisaur deals combat damage to a player, that player sacrifices an artifact. If they can't, you draw a card.

Whenever Implacable Shrine-Guard attacks, for each color, do the following if your devotion to that color is three or greater.
{W} — Create a 1/1 white Human creature token.
{U} — Draw a card.
{B} — Each opponent loses 2 life.
{R} — Create a Treasure token.
{G} — You gain 3 life.

Create three 1/1 colorless Cyborg artifact creature tokens, then you gain 1 life for each artifact you control. Each opponent loses that much life.

Imposing Oddity enters with X +1/+1 counters on it.
Whenever Imposing Oddity becomes spellcharged, put a +1/+1 counter on it.
Spellcharge 4
When Imposing Oddity dies, you may put its counters on another target Ruin you control.

Ward {2}
Imposing Serpent enters with X +1/+1 counters on it.

Target creature gets +2/+2 until end of turn. If you've cast another instant or sorcery spell this turn, put a +1/+1 counter on it.

Draw a card, gain 3 life, then make a pledge.
If you've cast four or more spells named Incumbency this game and there are five colors among permanents you control, you win the game.

Vigilance
When Indomitable Jicru enters, you gain 5 life and draw a card. If it wandered, creatures you control get +2/+2 until end of turn.
Wander {6}{G}{W}

Distribute two +1/+1 counters among one or two target creatures you control. Then if {G} was spent to cast this spell, put a lifelink counter on one of those creatures. Then if {U} was spent to cast this spell, put a vigilance counter on one of those creatures.

{3}{R}{R}, Exile Indulge the Fifth Encore from your hand: At the beginning of your next upkeep, you may cast Indulge the Fifth Encore from exile without paying its mana cost. Activate only as a sorcery.
Add {W}{U}{B}{R}{G}. Until end of turn, you don't lose this mana as steps and phases end.

Scry 1. Draw a card, then discard a card.
Flashback {U}

Integrate target permanent spell.

Approval — When Inflammatory Declaimer enters, it deals X damage to each opponent, where X is the number of colors among permanents you control.

Vigilance
When Informed Voter enters, make a pledge.

Flying, first strike, lifelink
At the beginning of your end step, if you gained 3 or more life this turn, draw a card.

Deathtouch
When Inkblooded Basilisk dies, draw a card.

Whenever Inner City Scout becomes the target of a spell or ability you control, untap it. It gets +1/+1 until end of turn. This ability triggers only once each turn.

Whenever Inner Ring's Pupil enters or attacks, target player discards a card. If they can't, they sacrifice a creature. If they can't, they lose 7 life.

When Inside Job enters, target creature can't be blocked this turn.
Whenever you amp it up, return Inside Job to its owner's hand.

Solidarity
Whenever Inspired Denizen attacks, create a 1/1 green Citizen creature token that's tapped and attacking.

Choose a card name. Target permanent gains protection from the chosen name until end of turn. Scry 2.

Choose target creature you control. Whenever that creature deals combat damage to a player this turn, draw that many cards. If {R} was spent to cast this spell, it gains trample until end of turn. If {W} was paid to cast this spell, it gets +1/+1 until end of turn.

Enchant creature
Whenever enchanted creature deals or is dealt damage, exile it.

Trample
Whenever Insurgency Mentor attacks, teach target attacking creature with lesser power trample.

Each player reveals their hand, then you choose a nonland card type. Each player discards all cards of the chosen type, then draws a card for each card they discarded this way.
Draw a card.