Krenko is a bit slow, and Bloodmark mentor doesn't offer enough power for the mana spent. I would drop both for more Goblin Piledriver and Legion Loyalist

T1-Goblin Guide(preferably) or Loyalist or ElderT2-Wardriver or Mentor T3-Chieftain or King(if opponent has mountains they may be in trouble) or Animosity T4- Krenko or any variant of T1-T3 or if you want to draw and keep some steam going use insight.Chieftain and Krenko are a great combo if not dealt with. Same goes for Mentor and Wardriver.

Goblin Bushwhacker is a really good option for quick wins.

Thank you for the suggestions. I have since modified it. I think the deck will play better now.

There's a version of goblins that's a lot more aggressive and streamlined than this one called 8Whack. It runs 4 Goblin Bushwhacker and 4 Reckless Bushwhacker. It uses these to buff up a huge load of goblins to massive levels and swing for lethal out of nowhere. The more aggressive list is something like:

4 Goblin Guide, 4 Legion Loyalist, 4 Foundry Street Denizen

4 Lightning Bolt, 4 Goblin Grenade

4 Mogg War Marshal, 3 Goblin Piledriver

3 Goblin Chieftain

I have since adjusted the deck so it is quicker. Seems to play much better than before. Anyone has other ideas feel free to share them. Always looking to improve.

What is the Manamorphose in the sideboard is for?

This does look like a very fun deck! If I had to change anything, I'd consider getting something like War-Torch Goblins or Fanatical Firebrands to either deal with creatures threatening something like your Goblin Piledrivers or to finish off a weakened player or larger creature, but the rest of the deck works so well together I'm not sure what they could replace. It looks like the best thing might be the Mogg War Marshals, but the two tokens they each give are nice. Besides, the Goblin Grenades and Lightning Bolts are already pretty good.

lukas96, I'm guessing the only reason the Manamorphose is there is just to be a free way to draw a card. For that reason, I think it could be a good sideboard choice.

ForestT but against which deck would you want to bring such a card in? its just worse than any other goblin in the deck and i doupt you want to board out bolt, granade or a land

lukas96, if you mean the Manamorphose, I was thinking about it and I realized you are completely right. Since all it does it allow you to draw a card while replacing the mana spent to play it, it practically has no negative or positive effect I can think of. The best use I can think of it would be to stick it into the deck in addition to the 60 cards already there to make it so an opponent trying to mill your library has four more cards to go through. In that case, since the cards don't seem to punish the player for using them I think they could either be removed or be stuck into the main deck, raising it to 64 cards. This could free up some slots in the sideboard.

Unless you mean the War-Torch Goblins/Fanatical Firebrands. For them, I was originally thinking they might be good against another deck with lots of weaker creatures because they could help reduce the number of potential blockers or against a deck with pretty tough creatures, a match in which their damage could stack with things like Goblin Grenade or Lightning Bolt to hopefully take out a creature that those spells couldn't eliminate by themselves. I admit they might not be optimal choices though, so perhaps they could be considered as replacements for Manamorphose in the sideboard?

yeah i ment the manamorphosesyou ushould never play more than 60 cards in a deck unless you have a special reason for that

Manamorphose allows for the surge cost on Reckless Bushwhacker as well

yeah but against which decks would you bring it in? its simply not a sideboard card