Reckless Impulse

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Crushing Canopy

Choose one —
• Destroy target creature with flying.
• Destroy target enchantment.

Orzhov Guildgate

Orzhov Guildgate enters the battlefield tapped.
{T}: Add {W} or {B}.

Pako, Arcane Retriever

Partner with Haldan, Avid Arcanist
Haste
Whenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.

Neverending Torment

Search target player's library for X cards, where X is the number of cards in your hand, and exile them. Then that player shuffles.
Epic (For the rest of the game, you can't cast spells. At the beginning of each of your upkeeps, copy this spell except for its epic ability. You may choose a new target for the copy.)

Rot-Tide Gargantua

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Rot-Tide Gargantua exploits a creature, each opponent sacrifices a creature.

Thirst for Discovery

Draw three cards. Then discard two cards unless you discard a basic land card.

Militia Rallier

Militia Rallier can't attack alone.
Whenever Militia Rallier attacks, untap target creature.

Mountain

Parallectric Feedback

Parallectric Feedback deals damage to target spell's controller equal to that spell's mana value.

Beloved Chaplain

Horizon Chimera

Flash
Flying, trample
Whenever you draw a card, you gain 1 life.

Devour Flesh

Target player sacrifices a creature, then gains life equal to that creature's toughness.

Infested Werewolf

Whenever Infested Werewolf enters the battlefield or attacks, create two 1/1 green Insect creature tokens.
Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Infestation Expert

Whenever Infestation Expert enters the battlefield or attacks, create a 1/1 green Insect creature token.
Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Infestation Expert // Infested Werewolf

Falkenrath Celebrants

Menace (This creature can't be blocked except by two or more creatures.)
When Falkenrath Celebrants enters the battlefield, create two Blood tokens. (They're artifacts with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

Odious Witch

Whenever Odious Witch attacks, defending player loses 1 life and you gain 1 life.

Ragged Recluse

At the beginning of your end step, if you discarded a card this turn, transform Ragged Recluse.

Ragged Recluse // Odious Witch

Beckon Apparition

Exile target card from a graveyard. Create a 1/1 white and black Spirit creature token with flying.

Quick Sliver

Flash
Any player may cast Sliver spells as though they had flash.

Haldan, Avid Arcanist

Partner with Pako, Arcane Retriever (When this creature enters the battlefield, target player may put Pako into their hand from their library, then shuffle.)
You may play lands and cast noncreature spells from among cards you exiled that have fetch counters on them, and you may spend mana as though it were mana of any color to cast those spells.

Bloodline Pretender

Changeling (This card is every creature type.)
As Bloodline Pretender enters the battlefield, choose a creature type.
Whenever another creature of the chosen type enters the battlefield under your control, put a +1/+1 counter on Bloodline Pretender.

Serpentine Ambush

Until end of turn, target creature becomes a blue Serpent with base power and toughness 5/5.

Plains

Thundering Djinn

Flying
Whenever Thundering Djinn attacks, it deals damage to any target equal to the number of cards you've drawn this turn.

Halana and Alena, Partners

First strike, reach
At the beginning of combat on your turn, put X +1/+1 counters on another target creature you control, where X is Halana and Alena's power. That creature gains haste until end of turn.