Put a hexproof counter on target creature you control. At the beginning of the next end step, remove a counter from that creature.

Trample
When Hunger's Door enters, you may return target Aura card from your graveyard to the battlefield attached to Hunger's Door.

When Hungry Blob enters, destroy up to three target artifacts and/or enchantments with total mana value 3 or less.

Ignite deals damage to any target equal to your devotion to red.

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.

Menace
Whenever Imposing Maw deals combat damage to a player, that player loses 3 life unless they discard a card.

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.

Whenever you attack, double target attacking creature's power and toughness until end of turn.

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

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 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.

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.

Target player reveals their hand. You choose a nonland card from it. Exile that card. Each player draws a card and loses 1 life.

Favored
Legendary permanents you control have haste and “Ward—Pay 3 life.”

Target player exiles two permanents they control with different mana values.

Exile target creature. Create a token that's a copy of it except it's a Ruin artifact instead of its other types and it has spellcharge X, where X is its mana value.

Whenever a land you control enters, if it doesn't share a name with any other lands you control, create a 1/1 red and green Elemental creature token.

When Kakomanties Circle enters, create a 2/2 black Zombie creature token.
Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

Whenever Kaleidoscope Mage attacks, look at the top three cards of your library. You may put any number of land cards with different names from among them onto the battlefield tapped. Put the rest on the bottom in a random order.

Create a 1/2 green Spider creature token with reach for each color of mana spent to cast this spell.

When Kappa Colony enters, create three 1/1 green Plant creature tokens.
Whenever you cast a spell from your graveyard, put a +1/+1 counter on each Plant you control.

You may have Karina's Substitute enter as a copy of a creature you control, except it's 1/4 and a Toy in addition to its other types.