{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {R} instead.

{T}, Exile an instant or sorcery card from your graveyard: Add one mana of any type.
Once each turn, when you cast an instant or sorcery spell, you may create a 1/1 colorless Construct artifact creature token.

Multitude {4}{G}{W}
Creature tokens you control get +1/+1 and have vigilance.

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

Flash
When Conduit of Change enters the battlefield, if you cast it, return all other nonland permanents to their owner's hands.
Spellcharge 7

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

Enchant nonland permanent
Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities.
Enchanted permanent has “At the beginning of your upkeep, you lose 1 life.”

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.

Enchant creature
Whenever enchanted creature deals combat damage to a player or planeswalker, you may sacrifice it. If you do, untap all creatures you control and after this phase, there is an additional combat phase.

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.

You may look at the top card of your library any time.
You may cast artifact and enchantment spells from the top of your library.
{T}, Sacrifice three artifacts and/or enchantments: Search your library for a card, then shuffle and put that card on top.

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.

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.

{C/B}: Integrate target card in a graveyard.
As long as a creature card with flying is integrated onto Corpsepyre Fiend, it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, reach, trample, and vigilance.

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.

{T}: Add {C}.
{X}{1}: Court of Miracles dares X.

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.

Flying, ward {1}
Whenever you cast an instant or sorcery spell, mill a card. Return an instant or sorcery card milled this way to your hand. If you can't, put a +1/+1 counter on Covetous Frostwyrm.

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