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.

Joined Researchers

First strike
At the beginning of each end step, if an opponent has more cards in hand than you, this creature becomes prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

Secret Rendezvous

You and target opponent each draw three cards.

Joined Researchers // Secret Rendezvous

Spirit Mascot

Whenever one or more cards leave your graveyard, put a +1/+1 counter on this creature.

Splatter Technique

Choose one —
• Draw four cards.
• Splatter Technique deals 4 damage to each creature and planeswalker.

Stadium Tidalmage

Whenever this creature enters or attacks, you may draw a card. If you do, discard a card.

Startled Relic Sloth

Trample, lifelink
At the beginning of combat on your turn, exile up to one target card from a graveyard.

Stirring Honormancer

When this creature enters, look at the top X cards of your library, where X is the number of creatures you control. Put one of those cards into your hand and the rest into your graveyard.

Stress Dream

Stress Dream deals 5 damage to up to one target creature. Look at the top two cards of your library. Put one of those cards into your hand and the other on the bottom of your library.

Suspend Aggression

Exile target nonland permanent and the top card of your library. For each of those cards, its owner may play it until the end of their next turn.

Tam, Observant Sequencer

Landfall — Whenever a land you control enters, Tam becomes prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)

Deep Sight

Tam, Observant Sequencer // Deep Sight

Teacher's Pest

Menace (This creature can't be blocked except by two or more creatures.)
Whenever this creature attacks, you gain 1 life.
{B}{G}: Return this card from your graveyard to the battlefield tapped.

Traumatic Critique

Traumatic Critique deals X damage to any target. Draw two cards, then discard a card.

Owlin Historian

Flying
When this creature enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Whenever one or more cards leave your graveyard, this creature gets +1/+1 until end of turn.

Vibrant Outburst

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

Vicious Rivalry

As an additional cost to cast this spell, pay X life.
Destroy all artifacts and creatures with mana value X or less.

Visionary's Dance

Elemental

Create two 3/3 blue and red Elemental creature tokens with flying.
{2}, Discard this card: Look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.

Secrets of Strixhaven