Sandsower

Tap three untapped creatures you control: Tap target creature.

Slaughter Pact

Destroy target nonblack creature.
At the beginning of your next upkeep, pay . If you don’t, you lose the game.

Fatal Fumes

Target creature gets -4/-2 until end of turn.

Lyev Decree

Detain up to two target creatures your opponents control. (Until your next turn, those creatures can’t attack or block and their activated abilities can’t be activated.)

Boros Mastiff

Battalion — Whenever Boros Mastiff and at least two other creatures attack, Boros Mastiff gains lifelink until end of turn. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

Restore the Peace

Return each creature that dealt damage this turn to its owner’s hand.

Render Silent

Counter target spell. Its controller can’t cast spells this turn.

Sengir Vampire

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.

Bump in the Night

Target opponent loses 3 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Spell Rupture

Counter target spell unless its controller pays , where X is the greatest power among creatures you control.

Devour Flesh

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

Duskmantle Seer

Flying
At the beginning of your upkeep, each player reveals the top card of their library, loses life equal to that card’s converted mana cost, then puts it into their hand.

Viashino Shanktail

First strike
Bloodrush — , Discard Viashino Shanktail: Target attacking creature gets +3/+1 and gains first strike until end of turn.

Condemn

Put target attacking creature on the bottom of its owner’s library. Its controller gains life equal to its toughness.

Lightning Helix

Lightning Helix deals 3 damage to any target and you gain 3 life.

Wild Nacatl

Wild Nacatl gets +1/+1 as long as you control a Mountain.
Wild Nacatl gets +1/+1 as long as you control a Plains.

Krosan Tusker

Cycling (, Discard this card: Draw a card.)
When you cycle Krosan Tusker, you may search your library for a basic land card, reveal that card, put it into your hand, then shuffle your library. (Do this before you draw.)

Splatter Thug

First strike
Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can’t block as long as it has a +1/+1 counter on it.)

Pack Rat

Pack Rat’s power and toughness are each equal to the number of Rats you control.
, Discard a card: Create a token that’s a copy of Pack Rat.

Wild Beastmaster

Whenever Wild Beastmaster attacks, each other creature you control gets +X/+X until end of turn, where X is Wild Beastmaster’s power.

Doorkeeper

Defender
, : Target player mills X cards, where X is the number of creatures with defender you control.

Detention Sphere

When Detention Sphere enters the battlefield, you may exile target nonland permanent not named Detention Sphere and all other permanents with the same name as that permanent.
When Detention Sphere leaves the battlefield, return the exiled cards to the battlefield under their owner’s control.

Galvanoth

At the beginning of your upkeep, you may look at the top card of your library. You may cast it without paying its mana cost if it’s an instant or sorcery spell.