Goblin Warchief

Giant spells you cast cost less to cast.

Locus of Slaanesh — Demon spells you cast cost less to cast.

Other Demons you control have haste.

Dragon spells you cast cost less to cast.

Dragon spells you cast cost less to cast.

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

Other Goblin creatures you control get +1/+1 and have haste.

Goblins you control and Elementals you control have menace. (They can't be blocked except by two or more creatures.)