Abel couldn't help but be amazed, "This is close to a national treasure!"
The crystal body could be used with no time limit. There was enough energy that all wizards from all groups could enjoy its benefits. If one particular wizard group happened to have more attacking power than other wizards, that advantage would just make them win every time they were to fight those of the same rank. Of course, he would've had to let his own contract creatures and summoned creatures use it first. That would almost definitely increase their fighting strength.
First, Abel called out Frankenstein. He then used his power of the Will to transfer warm energy into Frankenstein's body. Unfortunately, it was the same amount he received. He was a bit concerned before using it, but although Frankenstein's body was made entirely of steel, the crystal body's effect had most to do with the soul.