Trumpet Blast

Attacking creatures get +2/+0 until end of turn.

Shock

Goblin Warchief

Goblin spells you cast cost {1} less to cast.
Goblins you control have haste.

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Maniacal Rage

Enchant creature
Enchanted creature gets +2/+2 and can't block.

Goblin Ringleader

Haste (This creature can attack and {T} as soon as it comes under your control.)
When Goblin Ringleader enters the battlefield, reveal the top four cards of your library. Put all Goblin cards revealed this way into your hand and the rest on the bottom of your library in any order.

Siege-Gang Commander

When Siege-Gang Commander enters the battlefield, create three 1/1 red Goblin creature tokens.
{1}{R}, Sacrifice a Goblin: Siege-Gang Commander deals 2 damage to any target.

Skizzik

Kicker {R} (You may pay an additional {R} as you cast this spell.)
Trample, haste
At the beginning of the end step, if Skizzik wasn't kicked, sacrifice it.