Seize the Spoils

As an additional cost to cast this spell, discard a card.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Page, Loose Leaf

{T}: Add {C}.
Grandeur — Discard another card named Page, Loose Leaf: Reveal cards from the top of your library until you reveal an instant or sorcery card. Put that card into your hand and the rest on the bottom of your library in a random order.

Careful Study

Spellbook Seeker

Flying
This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

Spellbook Seeker // Careful Study

Deluge Virtuoso

When this creature enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Opus — Whenever you cast an instant or sorcery spell, this creature gets +1/+1 until end of turn. If five or more mana was spent to cast that spell, this creature gets +2/+2 until end of turn instead.

Elemental Mascot

Flying, vigilance
Opus — Whenever you cast an instant or sorcery spell, this creature gets +1/+0 until end of turn. If five or more mana was spent to cast that spell, exile the top card of your library. You may play that card until the end of your next turn.

Essence Scatter

Tome Blast

Tome Blast deals 2 damage to any target.
Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

All Aboard

Exile target non-Pilot creature you control, then return that card to the battlefield under its owner's control.

Skycoach Conductor

Flash
Flying, vigilance
This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

Skycoach Conductor // All Aboard

Burst Lightning

Kicker {4} (You may pay an additional {4} as you cast this spell.)
Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage instead.

Island

Stock Up

Look at the top five cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Flow State

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. If there is an instant card and a sorcery card in your graveyard, instead put two of them into your hand and the rest on the bottom of your library in any order.

Spectacular Skywhale

Flying
Opus — Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn. If five or more mana was spent to cast that spell, put three +1/+1 counters on this creature instead.

Vibrant Outburst

Vibrant Outburst deals 3 damage to any target. Tap up to one target creature.

Mountain

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Matterbending Mage

When this creature enters, return up to one other target creature to its owner's hand.
Whenever you cast a spell with {X} in its mana cost, this creature can't be blocked this turn.

Sleight of Hand

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Prismari Charm

Choose one —
• Surveil 2, then draw a card.
• Prismari Charm deals 1 damage to each of one or two targets.
• Return target nonland permanent to its owner's hand.

Craft with Pride

Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Goblin Glasswright

This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

Goblin Glasswright // Craft with Pride

Hydro-Channeler

{T}: Add {U}. Spend this mana only to cast an instant or sorcery spell.
{1}, {T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell.

Mica, Reader of Ruins

Ward—Pay 3 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 3 life.)
Whenever you cast an instant or sorcery spell, you may sacrifice an artifact. If you do, copy that spell and you may choose new targets for the copy.