Strands of Undeath

Enchant creature
When this Aura enters, target player discards two cards.
{B}: Regenerate enchanted creature.

Trigon of Rage

This artifact enters with three charge counters on it.
{R}{R}, {T}: Put a charge counter on this artifact.
{2}, {T}, Remove a charge counter from this artifact: Target creature gets +3/+0 until end of turn.

Hooded Horror

This creature can't be blocked as long as defending player controls the most creatures or is tied for the most.

Mogis's Warhound

Bestow {2}{R} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
This creature attacks each combat if able.
Enchanted creature gets +2/+2 and attacks each combat if able.

Bloodfell Caves

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {B} or {R}.

Embraal Gear-Smasher

{T}, Sacrifice an artifact: This creature deals 2 damage to each opponent.

Echo Circlet

Equipped creature can block an additional creature each combat.
Equip {1}

Weaselback Redcap

{1}{R}: This creature gets +2/+0 until end of turn.

Vraska's Finisher

When this creature enters, destroy target creature or planeswalker an opponent controls that was dealt damage this turn.

Defiant Khenra

Frontline Devastator

Afflict 2 (Whenever this creature becomes blocked, defending player loses 2 life.)
{1}{R}: This creature gets +1/+0 until end of turn.

Mountain

Gorehorn Minotaurs

Bloodthirst 2 (If an opponent was dealt damage this turn, this creature enters with two +1/+1 counters on it.)

Evolving Wilds

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

Spitting Earth

Spitting Earth deals damage to target creature equal to the number of Mountains you control.

Morgue Burst

Return target creature card from your graveyard to your hand. Morgue Burst deals damage to any target equal to the power of the card returned this way.

Bone Splinters

As an additional cost to cast this spell, sacrifice a creature.
Destroy target creature.

Madcap Skills

Enchant creature
Enchanted creature gets +3/+0 and has menace.

Smelt

Catacomb Crocodile

Doomed Dissenter

When this creature dies, create a 2/2 black Zombie creature token.

Gatstaf Ravagers

Menace (This creature can't be blocked except by two or more creatures.)
At the beginning of each upkeep, if a player cast two or more spells last turn, transform this creature.

Gatstaf Arsonists

At the beginning of each upkeep, if no spells were cast last turn, transform this creature.

Gatstaf Arsonists // Gatstaf Ravagers

Stir the Grave

Return target creature card with mana value X or less from your graveyard to the battlefield.

Unknown Shores

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Resourceful Return

Return target creature card from your graveyard to your hand. If you control an artifact, draw a card.

Angrath, Captain of Chaos

Creatures you control have menace.
−2: Amass Zombies 2. (Put two +1/+1 counters on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Rafter Demon

Spectacle {3}{B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
When this creature enters, if its spectacle cost was paid, each opponent discards a card.

Disciple of the Vault

Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.

Geth's Verdict

Target player sacrifices a creature of their choice and loses 1 life.

Volcanic Geyser

Volcanic Geyser deals X damage to any target.

Rakdos Roustabout

Whenever this creature becomes blocked, it deals 1 damage to the player or planeswalker it's attacking.

Sanitarium Skeleton

{2}{B}: Return this card from your graveyard to your hand.

Ninja of the New Moon

Ninjutsu {3}{B} ({3}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Kragma Butcher

Inspired — Whenever this creature becomes untapped, it gets +2/+0 until end of turn.

Soul Salvage

Return up to two target creature cards from your graveyard to your hand.

Swamp

Golden Urn

At the beginning of your upkeep, you may put a charge counter on this artifact.
{T}, Sacrifice this artifact: You gain life equal to the number of charge counters on this artifact.

Rakdos Shred-Freak

Minister of Pain

Exploit (When this creature enters, you may sacrifice a creature.)
When this creature exploits a creature, creatures your opponents control get -1/-1 until end of turn.

Shock

Eternal Taskmaster

This creature enters tapped.
Whenever this creature attacks, you may pay {2}{B}. If you do, return target creature card from your graveyard to your hand.

Skinrender

When this creature enters, put three -1/-1 counters on target creature.

Henge Walker

Adamant — If at least three mana of the same color was spent to cast this spell, this creature enters with a +1/+1 counter on it.

Gravedigger

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

Roving Keep

Defender
{7}: This creature gets +2/+0 and gains trample until end of turn. It can attack this turn as though it didn't have defender.

Rakdos Guildgate

This land enters tapped.
{T}: Add {B} or {R}.

Mahadi, Emporium Master

At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Reckless Fireweaver

Whenever an artifact you control enters, this creature deals 1 damage to each opponent.

Khenra Scrapper

Menace
You may exert this creature as it attacks. When you do, it gets +2/+0 until end of turn. (An exerted creature won't untap during your next untap step.)

Traveler's Amulet

{1}, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Vessel of Malignity

{1}{B}, Sacrifice this enchantment: Target opponent exiles two cards from their hand. Activate only as a sorcery.

Crackdown Construct

Whenever you activate an ability of an artifact or creature that isn't a mana ability, this creature gets +1/+1 until end of turn.

Vial of Poison

{1}, Sacrifice this artifact: Target creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Graveshifter

Changeling (This card is every creature type.)
When this creature enters, you may return target creature card from your graveyard to your hand.

Goblin Oriflamme

Attacking creatures you control get +1/+0.

Vestige of Emrakul

Shamble Back

Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token. You gain 2 life.

Sigiled Skink

Whenever this creature attacks, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Bombard

Bombard deals 4 damage to target creature.

Panic Spellbomb

{T}, Sacrifice this artifact: Target creature can't block this turn.
When this artifact is put into a graveyard from the battlefield, you may pay {R}. If you do, draw a card.

Enraged Giant

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Trample, haste

Gateway Plaza

This land enters tapped.
When this land enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Thresher Lizard

This creature gets +1/+2 as long as you have one or fewer cards in hand.

Azra Smokeshaper

Ninjutsu {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When this creature enters, target creature you control gains indestructible until end of turn.

Undercity Scavenger

When this creature enters, you may sacrifice another creature. If you do, put two +1/+1 counters on this creature, then scry 2.

Blood Ogre

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
First strike (This creature deals combat damage before creatures without first strike.)

Hackrobat

Spectacle {B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
{B}: This creature gains deathtouch until end of turn.
{R}: This creature gets +2/-2 until end of turn.

Destructive Tampering

Choose one —
• Destroy target artifact.
• Creatures without flying can't block this turn.

Trueheart Twins

You may exert this creature as it attacks. (It won't untap during your next untap step.)
Whenever you exert a creature, creatures you control get +1/+0 until end of turn.

Volcanic Dragon

Voracious Null

{1}{B}, Sacrifice another creature: Put two +1/+1 counters on this creature. Activate only as a sorcery.