Duel of Wizards

During bonus games a 2×4 frame moves to a new random position on the grid every spin. There the size of this frame increases to 3×4, 4×4, 5×4 up to 6×4 for every 3 collected scatters. The size always increases on the next spin.
The player is also granted between 1 and 3 free spins every time the duel frame size increases.
On rare occasions the frame shows up in the base game too with a random size. When this happens a VS is also guaranteed to land, but it can be outside the frame too.