I'll show you how to summon The Destroyer in a terraria.
To do this, we first need to go into hardmode.
This means killing the Wall of Flesh.
Next, we need to get a Mechanical Worm.
We can either craft it or get it form killing mobs.
But we will craft it.
To do this, you need to get some resources.
Among them: Rotten Chunk or Vertebra 6 pieces, Lead or Iron Bar 5 pieces, and 6 Souls of Night.
And now we go to Mythril or Orichalcum Anvil.
And pick up our Mechanical Worm.
Now at 7:30 PM, we can summon The Destroyer to fight him.
Thank you for watching. And goodbye.
