Bog Imp

Flying (This creature can’t be blocked except by creatures with flying or reach.)

Magnivore

Haste (This creature can attack and as soon as it comes under your control.)
Magnivore’s power and toughness are each equal to the number of sorcery cards in all graveyards.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Razortooth Rats

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)

Nightmare

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Nightmare’s power and toughness are each equal to the number of Swamps you control.

Wildfire

Each player sacrifices four lands. Wildfire deals 4 damage to each creature.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Underworld Dreams

Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.

Infernal Kirin

Flying
Whenever you cast a Spirit or Arcane spell, target player reveals their hand and discards all cards with that spell’s converted mana cost.

Kitsune Dawnblade

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
When Kitsune Dawnblade enters the battlefield, you may tap target creature.

Sokenzan Spellblade

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
: Sokenzan Spellblade gets +X/+0 until end of turn, where X is the number of cards in your hand.

Heartless Hidetsugu

: Heartless Hidetsugu deals damage to each player equal to half that player’s life total, rounded down.

Indebted Samurai

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)
Whenever a Samurai you control dies, you may put a +1/+1 counter on Indebted Samurai.

Call for Blood

As an additional cost to cast this spell, sacrifice a creature.
Target creature gets -X/-X until end of turn, where X is the sacrificed creature’s power.

Traproot Kami

Defender; reach (This creature can block creatures with flying.)
Traproot Kami’s toughness is equal to the number of Forests on the battlefield.

Frostling

Sacrifice Frostling: It deals 1 damage to target creature.

Matsu-Tribe Sniper

: Matsu-Tribe Sniper deals 1 damage to target creature with flying.
Whenever Matsu-Tribe Sniper deals damage to a creature, tap that creature and it doesn’t untap during its controller’s next untap step.

Form of the Squirrel

As Form of the Squirrel enters the battlefield, create a 1/1 green Squirrel creature token. You lose the game when that creature leaves the battlefield.
Creatures can’t attack you.
You have shroud.
You can’t cast spells.

Sosuke, Son of Seshiro

Other Snake creatures you control get +1/+0.
Whenever a Warrior you control deals combat damage to a creature, destroy that creature at end of combat.

Nezumi Cutthroat

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Nezumi Cutthroat can’t block.

Sakura-Tribe Elder

Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle your library.