Goblins is a fast creature-aggro deck, so counterspells are too slow and card-disadvantageous; bring in Circle of Protection: Red to blank their burn (Mogg Fanatic pings, Siege-Gang Commander activations) and Exalted Angel for a lifegain-attached flying blocker/attacker that dodges their ground-based Goblin army. Wrath of God and Swords to Plowshares are premium here against their wide board, so keep all copies. Humility also shuts down Goblin Piledriver's attack trigger and Goblin Warchief's haste, making it very strong. Keep Mishra's Factory active as a free blocker against their aggression.