Goblin Warchief

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

Goblin Shortcutter

When Goblin Shortcutter enters, target creature can't block this turn.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.

When Goblin Matron enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.

When Goblin Instigator enters, create a 1/1 red Goblin creature token.

Haste (This creature can attack and {T} as soon as it comes under your control.)

Create two 1/1 red Goblin creature tokens.

Haste (This creature can attack and {T} as soon as it comes under your control.)
Other Goblin creatures you control get +1/+1 and have haste.