Undertaker

{B}, {T}, Discard a card: Return target creature card from your graveyard to your hand.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Avalanche Riders

Haste
Echo {3}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Avalanche Riders enters the battlefield, destroy target land.

Rain of Tears

Dread of Night

Defense Grid

Each spell costs {3} more to cast except during its controller's turn.

Steam Blast

Steam Blast deals 2 damage to each creature and each player.

Jokulhaups

Destroy all artifacts, creatures, and lands. They can't be regenerated.

Thrashing Wumpus

{B}: Thrashing Wumpus deals 1 damage to each creature and each player.

Enslaved Horror

When Enslaved Horror enters the battlefield, each other player may return a creature card from their graveyard to the battlefield.

Silent Assassin

{3}{B}: Destroy target blocking creature at end of combat.

Dark Ritual

Boil

Thunderclap

You may sacrifice a Mountain rather than pay this spell's mana cost.
Thunderclap deals 3 damage to target creature.

Swamp

Bone Shredder

Flying
Echo {2}{B} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Bone Shredder enters the battlefield, destroy target nonartifact, nonblack creature.

Shock

Pillage

Destroy target artifact or land. It can't be regenerated.

Sulfurous Springs

{T}: Add {C}.
{T}: Add {B} or {R}. Sulfurous Springs deals 1 damage to you.

Perish

Destroy all green creatures. They can't be regenerated.

Dry Spell

Dry Spell deals 1 damage to each creature and each player.

Persecute

Choose a color. Target player reveals their hand and discards all cards of that color.

Mountain

Shock Troops

Sacrifice Shock Troops: It deals 2 damage to any target.

Befoul

Destroy target land or nonblack creature. It can't be regenerated.

Cateran Enforcer

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
{4}, {T}: Search your library for a Mercenary permanent card with mana value 4 or less, put it onto the battlefield, then shuffle.

Goblin War Buggy

Haste
Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Vendetta

Destroy target nonblack creature. It can't be regenerated. You lose life equal to that creature's toughness.

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Cinder Elemental

{X}{R}, {T}, Sacrifice Cinder Elemental: It deals X damage to any target.

Deepwood Ghoul

Snuff Out

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.