3Clash Royale card guide
Goblin Barrel is a spell that throws three goblins anywhere on your opponent's side. It's the win condition of Log Bait decks.
Throw Goblin Barrel at the enemy tower; the goblins deal high tower damage. Baiting out your opponent's small spell with cards like Princess or Goblin Gang first and then throwing the barrel is the classic plan. Throwing it at different spots confuses the defense.
Cards that deal with it efficiently:

This card has an evolution. The evolution is active in your deck’s 1st (Evolution) or 3rd (Wild) slot. The Evolution slot unlocks at Arena 3, the Wild slot at Arena 10.
ElixirDeck automatically takes your unlocked evolutions and heroes into account: build your decks.