Free spins
In the free spins, the shield as scatter upgrades the wild symbols that land. For this, you collect the shields in a counter above the reel display. Once the counter reaches four shields, the size of the sword is doubled. At eight shields, the sword grows to triple size. At twelve shields, it becomes an expanding wild.
With every new sword that lands, as well as with every position shift of the swords already visible, you receive an additional free spin.