Instigator goblins is probably one of decks that suffers the least from losing power, it definitely is better powered but is still very playable unpowered. The deck really shines in a meta light on storm, oath and creatures and is heavy on shop decks.
Quote from: BruiZar on Today at 04:48:10 AM
Against shop you could board in Pulverize. It allows you to pay for spheres easily and can reset the board at the cost of your lands, but with a little luck you opened with a Goblin Lackey. Workshop tends to overextend so I think that is the way to capitalize on it. This also ensures you connect with lackey.
I've tried Pulverize in the past. It's not bad, but you hit the nail on the head when you reference connecting with Lackey. Basically, you throw away most of your mana and need something like Lackey to keep producing threats.
Pulverize is definitely your best sideboard card vs shops with this build. Having 8 lackey effects makes it easy for you to recover from the land loss faster than the shop player can after getting most of there board wiped out. Another card that is a total house against shops in this build is Tuktuk Scrapper. He is tutorable artifact hate and once Kiki-Jiki is online he destroys 2 artifacts and deals 8 damage every turn.
From how you described your metagame this is a decent unpowered list that you could run.
4 Earwig Squad
3 Mogg Fanatic
4 Goblin Ringleader
4 Goblin Lackey
4 Skirk Prospector
4 Warren Instigator
4 Goblin Matron
1 Warren Weirding
1 Gempalm Incinerator
1 Wort, Boggart Auntie
1 Lightning Crafter
1 Goblin Warcheif
1 Tuktuk Scrapper
2 Kiki-Jiki, Mirror Breaker
1 Lotus Petal
2 Chrome Mox
4 Simian Spirit Guide
4 Bloodstained Mire
4 Wooded Foothills
4 Badlands
6 Mountain
SB:
2 Shattering Spree
2 Pulverize
1 Warren Weirding
2 Yixlid Jailer
4 Leyline Of The Void
2 Bitter Ordeal
2 Greater Gargadon