Thopter Squadron

Flying
Thopter Squadron enters with three +1/+1 counters on it.
{1}, Remove a +1/+1 counter from Thopter Squadron: Create a 1/1 colorless Thopter artifact creature token with flying. Activate only as a sorcery.
{1}, Sacrifice another Thopter: Put a +1/+1 counter on Thopter Squadron. Activate only as a sorcery.

Gemstone Mine

Gemstone Mine enters with three mining counters on it.
{T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.

Striped Bears

Abyssal Gatekeeper

When Abyssal Gatekeeper dies, each player sacrifices a creature.

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Tendrils of Despair

As an additional cost to cast this spell, sacrifice a creature.
Target opponent discards two cards.

Cloudchaser Eagle

Flying
When Cloudchaser Eagle enters, destroy target enchantment.

Uktabi Orangutan

When Uktabi Orangutan enters, destroy target artifact.

Plains

Warrior Angel

Flying
Whenever Warrior Angel deals damage, you gain that much life.

Venerable Monk

When Venerable Monk enters, you gain 2 life.

Argivian Find

Return target artifact or enchantment card from your graveyard to your hand.

Recurring Nightmare

Sacrifice a creature, Return Recurring Nightmare to its owner's hand: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Rukh Egg

When Rukh Egg dies, create a 4/4 red Bird creature token with flying at the beginning of the next end step.

Hidden Horror

When Hidden Horror enters, sacrifice it unless you discard a creature card.

Vampiric Tutor

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Bayou

Scrubland

Wall of Blossoms

Defender
When Wall of Blossoms enters, draw a card.

Nekrataal

First strike
When Nekrataal enters, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

Savannah

Reflecting Pool

{T}: Add one mana of any type that a land you control could produce.

Vampire Hounds

Discard a creature card: Vampire Hounds gets +2/+2 until end of turn.

Welkin Hawk

Flying
When Welkin Hawk dies, you may search your library for a card named Welkin Hawk, reveal that card, put it into your hand, then shuffle.

Wood Elves

When Wood Elves enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.

Gravedigger

When Gravedigger enters, you may return target creature card from your graveyard to your hand.