Colossal Tarasque can't be blocked by creatures with power 2 or less.
{2}, Discard Colossal Tarasque: Search your library for a basic Forest card, reveal it, put it into your hand, then shuffle.

This spell costs {X} less to cast, where X is your greatest devotion to a single color.
Menace

Create a 0/0 white Army creature token if your devotion to white is three or more.
Put a +1/+1 counter on each creature you control.

Destroy target creature. That creature's controller loses 1 life for each kind of counter among permanents you control.

When Confetti Cannons leaves the battlefield, create a 1/1 white Elemental Bird creature token with flying.

Choose one —
• Target creature gets +2/+0 and gains indestructible until end of turn.
• Target player sacrifices a creature.

Create a 1/1 white Spirit creature token with flying. If you've cast another instant or sorcery spell this turn, create two of those tokens instead.

Gain control of up to two target creatures with total mana value 4 or less until end of turn. Untap one of them. It gains haste until end of turn.

Destroy target artifact or enchantment. If that permanent was a token, draw a card.

Indulgence
When Conspiracy of Wealth enters the battlefield, draw a card.
Whenever you indulge, you may exile target card from a graveyard.

Enchant creature
Enchanted creature gets +1/+1 and has “Whenever this creature deals combat damage to a player, draw a card.”
{VP}{VP}{VP}: Enchanted creature gains flying until end of turn.

Deathtouch
Whenever a creature you control with deathtouch deals damage to a planeswalker, destroy that planeswalker.
{2}{G}, Exile Contagion Brewer from your graveyard: Return target creature card with deathtouch from your graveyard to your hand.

Enchant creature
When Contain for Study enters, tap enchanted creature.
You control enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Corgan Bourgeois's power is equal to the number of artifacts you control.
Whenever Corgan Bourgeois or another artifact enters the battlefield under your control, you gain 1 life.

Whenever a creature dies, scry 1.

Corgan Sprawl enters the battlefield tapped.
{T}: Add {B} or {R}.
{T}, Discard another card named Corgan Sprawl: Draw a card.

Choose one —
• Return target creature card from a graveyard to its owner's hand.
• Exile target creature card in a graveyard, then draw a card.

Deathtouch
When Corpse Thieves enters the battlefield, mill three cards.
Corpse Thieves's power is equal to the greatest mana value among cards in your graveyard.

Flash
When Corrosive Spitter enters the battlefield, destroy all creatures that were dealt damage this turn.

When Cosmic Colossus enters, if you cast it from your hand, cast a copy of target card in exile without paying its mana cost unless an opponent exiles two nonland permanents they control.

When Courtless Spiritcaller enters the battlefield, create a 1/1 white Spirit creature token with flying.
{4}{W}, Sacrifice Courtless Spiritcaller: Create two 1/1 white Spirit creature tokens with flying.

{2}, Sacrifice another creature: Put a +1/+1 counter on Coward-Eater. Draw a card.

{T}: Add {C}.
{1}, {T}, Sacrifice Cradle of Rebirth: Copy target spell you control which had its flashback cost paid. You may choose new targets for the copy.

Trample
Whenever one or more creatures you control with trample deal combat damage to a player or planeswalker, put a +1/+1 counter on target creature you control.

Exile target creature with flying.