"Rewind!"
Without anticipating success the first time, Mu You pushed his pocket watch and repeated the earlier steps.
Having repeated the steps twelve times, eventual dizziness was triggered.
[...the hammer hits, and the goblin feels a buzzing in its head and falls into dizziness. You quickly approach and pour a sleeping potion into the goblin's mouth.]
[The sleeping potion quickly takes effect, and the goblin falls into a deep sleep before the dizziness wears off. You tie up the sleeping goblin securely, then open a collecting bottle and toss the goblin inside...]
[You have received 'Goblin Submarine', 'Unstable Sulphur *124', 'Goblin Toolbox' *1, 'Fish Repellent Magnetic Field Generator'*1, 'Self-Destructing Fish Burning Stick' *10.]
Successfully capturing a goblin, Mu You claimed a pile of items.
Mu You checked each item in turn.