Creatures do not pull their punches if the blocking creature has a toughness lower than its power
You then attack for 8, and sacrifice the Hero with Callous Sell-Swords adventure, which effectively deals 16 and wins from there
Okay, I know its not a goblin or a goblin payoff per se, but Purphoros, God of the Forge decks in EDH are often built as goblin token decks, seeing as each token you put in play can dome your opponents for 2
The sideboard takes advantage of the fact that the desire for colorless lands pushes the deck to have red mana to sideboard Fevered Visions, a card that has really impressed me against control decks, along with Gideon, Ally of Zendikar and a couple of counterspells
Running out of cards in your hand when youre playing a deck built around creature type can be a death sentence, especially when your opponents have a ton of cards in hand