Solemn Simulacrum

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
When this creature dies, you may draw a card.

Refute

Counter target spell. Draw a card, then discard a card.

Island

Aetherize

Return all attacking creatures to their owner's hand.

Spectral Sailor

Flash (You may cast this spell any time you could cast an instant.)
Flying
{3}{U}: Draw a card.

Clinquant Skymage

Flying
Whenever you draw a card, put a +1/+1 counter on this creature.

Elementalist Adept

Flash (You may cast this spell any time you could cast an instant.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Cephalid Inkmage

When this creature enters, surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Threshold — This creature can't be blocked as long as there are seven or more cards in your graveyard.

Faebloom Trick

Create two 1/1 blue Faerie creature tokens with flying. When you do, tap target creature an opponent controls.

Empyrean Eagle

Flying
Other creatures you control with flying get +1/+1.

Icewind Elemental

Flying
When this creature enters, draw a card, then discard a card.

Swamp

Arcane Epiphany

This spell costs {1} less to cast if you control a Wizard.
Draw three cards.

Gleaming Barrier

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

Evolving Wilds

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Lightshell Duo

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When this creature enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Plains

Homunculus Horde

Whenever you draw your second card each turn, create a token that's a copy of this creature.

An Offer You Can't Refuse

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Bigfin Bouncer

When this creature enters, return target creature an opponent controls to its owner's hand.

Stab

Target creature gets -2/-2 until end of turn.

Hero's Downfall

Sanguine Syphoner

Whenever this creature attacks, each opponent loses 1 life and you gain 1 life.

Mocking Sprite

Flying
Instant and sorcery spells you cast cost {1} less to cast.

Erudite Wizard

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.