I would take out the Bloodmark Mentor for the Goblin Matron. Seems it would be more helpful. Or replace the Warren Instigator with it since it allows the search. Also I'd replace the lightning bolts with Goblin War Strike. I know it eliminates the creature option but you can grenade your opponents creatures and I have killed off many opponents using the war strike. Depending on how cozy you are with your land base, you could probably swap out a couple mountains for a couple Goblin Burrows. Hope that helps. Love goblins!