The attribute change formula of the Horadric Cube was as followed: three perfect gems + one blue item.
Abel had 90 more perfect gems in his kong kong spiritual beast bag. As for the blue quality items that he could use for this formula, the thing he had was the silver bat ring.
Abel emptied all the items in the Horadric cube, put it on the ground, put the three perfect gems in the Horadric Cube, and put the silver bat ring in it. He took a deep breath and pressed the transmute button with his power of the Will.
A white light appeared. Three perfect gemstones and the silver bat ring disappeared at the same time, and a new ring appeared in the lower right corner of the Horadric Cube.
Ring of Cobalt Power
+1 Strength
+30% cold resistance