Goblin Spelunkers

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Greater Forgeling

{1}{R}: This creature gets +3/-3 until end of turn.

Devouring Light

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Exile target attacking or blocking creature.

Hammerfist Giant

{T}: This creature deals 4 damage to each creature without flying and each player.

Knight

Hunted Dragon

Flying, haste
When this creature enters, target opponent creates three 2/2 white Knight creature tokens with first strike.

Incite Hysteria

Radiance — Until end of turn, target creature and each other creature that shares a color with it gain "This creature can't block."

Indentured Oaf

Prevent all damage that this creature would deal to red creatures.

Instill Furor

Enchant creature
Enchanted creature has "At the beginning of your end step, sacrifice this creature unless it attacked this turn."

Mindmoil

Whenever you cast a spell, put the cards in your hand on the bottom of your library in any order, then draw that many cards.

Molten Sentry

As this creature enters, flip a coin. If the coin comes up heads, this creature enters as a 5/2 creature with haste. If it comes up tails, this creature enters as a 2/5 creature with defender.

Ordruun Commando

{W}: Prevent the next 1 damage that would be dealt to this creature this turn.

Rain of Embers

Rain of Embers deals 1 damage to each creature and each player.

Reroute

Change the target of target activated ability with a single target. (Mana abilities can't be targeted.)
Draw a card.

Divebomber Griffin

Flying
{T}, Sacrifice this creature: It deals 3 damage to target attacking or blocking creature.

Sabertooth Alley Cat

This creature attacks each combat if able.
{1}{R}: Creatures without defender can't block this creature this turn.

Ravnica: City of Guilds