Counter target spell. That spell's controller reveals their hand.

Target player mills twice X cards.

This spell can't be countered.
Flying, ward {2}
Whenever Hoarding Culebre enters or attacks, draw a card. Then if you have five or more cards in hand, create a Treasure token.

Flash
This spell costs {1} less to cast for each kind of counter among permanents you control.
Whenever Gregarious Grenouille enters or attacks, choose a counter on a permanent you control. Put a counter of that kind on Gregarious Grenouille if it doesn't have a counter of that kind on it.

Flying
Whenever Goletre's Disciple enters or attacks, choose a counter on a permanent you control. Put a counter of that kind on target permanent you control if it doesn't have a counter of that kind on it.

Indulgence
Whenever you indulge, you may exile target instant or sorcery card from your graveyard. If you do, cast a copy of that card without paying its mana cost.

{3}{U}: Draw a card, then discard a card.

Exile target artifact, creature, or planeswalker you control, then return that card to the battlefield under its owner's control. If it enters as a creature, it enters with a flying counter on it.

Whenever you cast an instant or sorcery spell with mana value 4 or greater, look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.

Indulgence
Whenever you indulge, surveil 2.

Create two tokens that are copies of target creature. Put a ward {2} counter on one of those tokens and a flying counter on the other.

Gain control of target creature.
{1}{U}, Discard Dominate Mind: Tap target creature. It doesn't untap during its controller's next untap step.

The owner of target nonland permanent puts it on the top or bottom of their library.
{2}, Discard Dockside Curfew: Search your library for a basic Island card, reveal it, put it into your hand, then shuffle.

When Disguising Barber enters, you may have another target creature you control become a copy of any creature on the battlefield for as long as you control Disguising Barber.

When Carving Instructor enters, put a flying counter on target creature you control.

Counter target spell unless its controller pays {2}. Until end of turn, spells your opponents cast cost {1} more to cast.

Counter target noncreature spell. Search its controller's graveyard, hand, and library for any number of cards with the same name as that spell and exile them. That player shuffles, then draws a card for each card exiled from their hand this way.

Enchant creature
Enchanted creature loses all abilities and is a white Peasant with base power and toughness 1/1 named Penitent Prisoner.
When enchanted creature leaves the battlefield, you may draw a card.

Ward {2}
At the beginning of your end step, if it's not an extra turn and you've cast three or more instant or sorcery spells with different mana values this turn, take an extra turn after this one.

Alehana's Eyes has +1/+1 and can't be blocked as long as you've cast an instant or sorcery spell with mana value 4 or greater this turn.

Absorbed Painter enters with a +1/+1 counter, a flying counter, and a vigilance counter on it.
Absorbed Painter can't attack or block as long as it has a counter on it.
{U}, {T}: You may move a counter from a creature you control to another creature you control. Activate only as a sorcery.

Return up to one target tapped artifact or creature to its owner's hand. Surveil 1.

{1}, Sacrifice Wealthy Clergyman: Another target creature you control gains hexproof and indestructible until end of turn. If that creature is a Noble, put a +1/+1 counter on it.

Whenever one or more creatures attack you, create a Food token.

Indulgence
Whenever you indulge, you may untap target permanent you control.