Mogg War Marshal

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.)
When Mogg War Marshal enters or dies, create a 1/1 red Goblin creature token.

Xira Arien

Flying
{B}{R}{G}, {T}: Target player draws a card.

Seton's Desire

Enchant creature
Enchanted creature gets +2/+2.
Threshold — As long as seven or more cards are in your graveyard, all creatures able to block enchanted creature do so.

Phyrexian Debaser

Flying
{T}, Sacrifice Phyrexian Debaser: Target creature gets -2/-2 until end of turn.

Street Wraith

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
Cycling—Pay 2 life. (Pay 2 life, Discard this card: Draw a card.)

Swamp

Break Asunder

Destroy target artifact or enchantment.
Cycling {2} ({2}, Discard this card: Draw a card.)

Festering Goblin

When Festering Goblin dies, target creature gets -1/-1 until end of turn.

Goblin Medics

Whenever Goblin Medics becomes tapped, it deals 1 damage to any target.

Crawlspace

No more than two creatures can attack you each combat.

Slippery Karst

Slippery Karst enters tapped.
{T}: Add {G}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Flametongue Kavu

When Flametongue Kavu enters, it deals 4 damage to target creature.

Juggernaut

This creature attacks each combat if able.
This creature can't be blocked by Walls.

Duress

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

Primal Boost

Target creature gets +4/+4 until end of turn.
Cycling {2}{G} ({2}{G}, Discard this card: Draw a card.)
When you cycle Primal Boost, you may have target creature get +1/+1 until end of turn.

Mountain

Hyalopterous Lemure

{0}: Hyalopterous Lemure gets -1/-0 and gains flying until end of turn.

Coal Stoker

When Coal Stoker enters, if you cast it from your hand, add {R}{R}{R}.

Phyrexian Ghoul

Sacrifice a creature: Phyrexian Ghoul gets +2/+2 until end of turn.

Macetail Hystrodon

First strike, haste
Cycling {3} ({3}, Discard this card: Draw a card.)

Symbiotic Beast

When Symbiotic Beast dies, create four 1/1 green Insect creature tokens.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Decimate

Destroy target artifact, target creature, target enchantment, and target land. (You can't cast this spell unless you have legal choices for all its targets.)

Undying Rage

Enchant creature
Enchanted creature gets +2/+2 and can't block.
When Undying Rage is put into a graveyard from the battlefield, return Undying Rage to its owner's hand.

Ridgetop Raptor

Double strike (This creature deals both first-strike and regular combat damage.)

Forest

Twisted Experiment

Enchant creature
Enchanted creature gets +3/-1.

Ichor Slick

Target creature gets -3/-3 until end of turn.
Cycling {2} ({2}, Discard this card: Draw a card.)
Madness {3}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)