Choose a color. Exile all permanents of the chosen color. Until the end of your next turn, if you would add {C}, instead add {C} and one mana of the chosen color.

This spell costs {2} less to cast if the creature you control it targets has power 4 or greater.
Put a +1/+1 counter on target creature you control. It deals damage to another target creature equal to its power.

Whenever you attack, put a +1/+1 counter on a creature you control.

Haste
{T}: Target creature gains haste until end of turn.
Wander {1}{R}

Choose one —
• Destroy target artifact or enchantment.
• Return target permanent card from your graveyard to your hand.

Drop — When Club Promoter enters, choose one. If you didn't cast any creature spells during your last turn, you may choose both instead.
• Destroy target artifact or enchantment.
• Put two +1/+1 counters on Club Promoter.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {G} instead.

{T}: Add {C}.
If a spell or ability you control would produce {C}, you may pay 1 life. If you do, it produces {R} instead.

When Coercive Contractor enters, create a Treasure token.
{X}, {T}, Sacrifice a Treasure: Gain control of target nontoken creature with mana value X until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.

{T}, Sacrifice an artifact: 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.

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

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

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.

Counter target activated ability from a nonland source.
Draw a card.

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.

Menace
Whenever Corporate Mentor attacks, teach target attacking creature with lesser power menace.

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}.
{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.

{T}: Add one mana of any color.
{T}: Draw a card, then discard a card. Activate only if you've cast a non-Human creature spell this turn.

Exile target creature with flying.

Landfall — Whenever a land you control enters, exile the top card of your library. You may play that card until the end of your next turn.
{1}{R}, Sacrifice Crumbling Tower: It deals damage equal to the number of cards exiled with it to target player.

Destroy target artifact or land.
Flashback {4}{R}{R}

[+1]: Crux deals 1 damage to target player or planeswalker. Put a chain counter on up to one target artifact or nonbasic land. It loses all abilities except mana abilities as long as it has a chain counter on it.
[–2]: Discard a card. When you do, Crux deals damage equal to the discarded card's mana value to up to one target creature and you draw a card.
[–6]: Exile target red instant or sorcery card from your graveyard. Add {R}{R}{R}, then you get an emblem with “You may cast copies of the exiled card.”

Untap all lands you control. Until end of turn, they become 1/1 Elemental artifact creatures with vigilance, indestructible, and haste in addition to their other types.