Abstract Paintmage

At the beginning of your first main phase, add {U}{R}. Spend this mana only to cast instant and sorcery spells.

Fractal

Applied Geometry

Create a token that's a copy of target non-Aura permanent you control, except it's a 0/0 Fractal creature in addition to its other types. Put six +1/+1 counters on it.

Ark of Hunger

Whenever one or more cards leave your graveyard, this artifact deals 1 damage to each opponent and you gain 1 life.
{T}: Mill a card. You may play that card this turn.

Aziza, Mage Tower Captain

Whenever you cast an instant or sorcery spell, you may tap three untapped creatures you control. If you do, copy that spell. You may choose new targets for the copy.

Berta, Wise Extrapolator

Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.)
Whenever one or more +1/+1 counters are put on Berta, add one mana of any color.
{X}, {T}: Create a 0/0 green and blue Fractal creature token and put X +1/+1 counters on it.

Blech, Loafing Pest

Whenever you gain life, put a +1/+1 counter on each Pest, Bat, Insect, Snake, and Spider you control.

Bogwater Lumaret

Whenever this creature or another creature you control enters, you gain 1 life.

Borrowed Knowledge

Choose one —
• Discard your hand, then draw cards equal to the number of cards in target opponent's hand.
• Discard your hand, then draw cards equal to the number of cards discarded this way.

Cauldron of Essence

Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.
{1}{B}{G}, {T}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Harsh Annotation

Inkling

Destroy target creature. Its controller creates a 1/1 white and black Inkling creature token with flying.

Colorstorm Stallion

Copy

Ward {1}, haste
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, create a token that's a copy of this creature.

Colossus of the Blood Age

When this creature enters, it deals 3 damage to each opponent and you gain 3 life.
When this creature dies, discard any number of cards, then draw that many cards plus one.

Conciliator's Duelist

When this creature enters, draw a card. Each player loses 1 life.
Repartee — Whenever you cast an instant or sorcery spell that targets a creature, exile up to one target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Cuboid Colony

Flash
Flying, trample
Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.)

Dina's Guidance

Search your library for a creature card, reveal it, put it into your hand or graveyard, then shuffle.

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.

Secrets of Strixhaven