Dauthi Marauder

Shadow (This creature can block or be blocked by only creatures with shadow.)

Wall of Nets

Defender (This creature can't attack.)
At end of combat, exile all creatures blocked by this creature.
When this creature leaves the battlefield, return all cards exiled with it to the battlefield under their owners' control.

Knight of Valor

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
{1}{W}: Each creature without flanking blocking this creature gets -1/-1 until end of turn. Activate only once each turn.

Pang Tong, "Young Phoenix"

{T}: Target creature gets +0/+2 until end of turn. Activate only during your turn, before attackers are declared.

Bog Glider

Flying
{T}, Sacrifice a land: Search your library for a Mercenary permanent card with mana value 2 or less, put it onto the battlefield, then shuffle.

Llanowar Vanguard

{T}: This creature gets +0/+4 until end of turn.

Keldon Vandals

Echo {2}{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 this creature enters, destroy target artifact.

Searing Spear Askari

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
{1}{R}: This creature gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Hell-Bent Raider

First strike, haste
Discard a card at random: This creature gains protection from white until end of turn.

Ignoble Soldier

Whenever this creature becomes blocked, prevent all combat damage that would be dealt by it this turn.

Cunning Sparkmage

Haste
{T}: This creature deals 1 damage to any target.

Mystic Crusader

Protection from black and from red
Threshold — As long as seven or more cards are in your graveyard, this creature gets +1/+1 and has flying.

Zhalfirin Knight

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
{W}{W}: This creature gains first strike until end of turn.

Weatherseed Faeries

Horrible Hordes

Rampage 1 (Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it beyond the first.)

Skeleton Scavengers

This creature enters with a +1/+1 counter on it.
Pay {1} for each +1/+1 counter on this creature: Regenerate this creature. When it regenerates this way, put a +1/+1 counter on it.

Slithery Stalker

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
When this creature enters, exile target green or white creature an opponent controls.
When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Calming Licid

{W}, {T}: This creature loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {W} to end this effect.
Enchanted creature can't attack.

Shifty Doppelganger

{3}{U}, Exile this creature: You may put a creature card from your hand onto the battlefield. If you do, that creature gains haste until end of turn. At the beginning of the next end step, sacrifice that creature. If you do, return this card to the battlefield.

Glacial Wall

Hurloon Shaman

When this creature dies, each player sacrifices a land of their choice.

Viashino Outrider

Echo {2}{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.)

Viashino Sandstalker

Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, return this creature to its owner's hand. (Return it only if it's on the battlefield.)