Skinbrand Goblin

Bloodrush — {R}, Discard this card: Target attacking creature gets +2/+1 until end of turn.

Whiskerquill Scribe

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, you may discard a card. If you do, draw a card.

Rubblebelt Maaka

Bloodrush — {R}, Discard this card: Target attacking creature gets +3/+3 until end of turn.

War Squeak

Enchant creature
When this Aura enters, target creature an opponent controls can't block this turn.
Enchanted creature gets +1/+1 and has haste.

Chimney Rabble

Haste
When this creature enters, create a 1/1 red Phyrexian Goblin creature token.

Edgewall Pack

Menace (This creature can't be blocked except by two or more creatures.)
When this creature enters, create a 1/1 black Rat creature token with "This token can't block."

Sarpadian Simulacrum

Haste
{3}{R}, Sacrifice this creature: It deals 4 damage to target creature.

Raccoon Rallier

{T}: Target creature you control gains haste until end of turn. Activate only as a sorcery.

Mountain

Fanatical Firebrand

Haste (This creature can attack and {T} as soon as it comes under your control.)
{T}, Sacrifice this creature: It deals 1 damage to any target.

Dinotomaton

Menace (This creature can't be blocked except by two or more creatures.)
When this creature enters, target creature you control gains menace until end of turn.

Shock

Lightning Strike

Lightning Strike deals 3 damage to any target.

Mudbutton Torchrunner

When this creature dies, it deals 3 damage to any target.

Plundering Pirate

When this creature enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Bathe in Dragonfire

Bathe in Dragonfire deals 4 damage to target creature.

Alania's Pathmaker

When this creature enters, exile the top card of your library. Until the end of your next turn, you may play that card.