This guide will let you know about the drop chances of every item in King Legacy. You can pick these items up, and they will help you a lot in the game.
Starter
Tashi blade has a 15% drop chance.
Shark Island
Shark blade has a 15% drop chance.
Sky Island
The drop chance of the Pole is 5%. 
Zombie Island
Black orb 1% has a drop chance while the drop chance of Mom Blade is 15%.
War Island
Bisento has a 15% drop chance.
Stone Arena
Saber has a 25% drop chance.
Fishland
The Map has a 30% drop chance. 
Death Tundra
The drop chance of the Anubis axe is 15%. Adventure knife has a 1% drop chance, and the drop chance of Hell Sword is 50%.
Skull Island
Dragon gem has a 0.5% drop chance.
The drop chance of Authentic mace is 10%.
Authentic TTK
Level 1 chest has a 1% drop chance. The drop chance of Level 2 chest is 10%, while Level 3 chest has a 30% drop chance. 