Verge of discovery

When he first created Mithril, he had nothing to draw inspiration from other than his own experience as a Mystical Arts user. He inputted the mana into the Damascus steel the same way that he stored mana in his cores. He concentrated his mana core to be as little as possible so that drawing mana from it would result in a stronger release in the spell.

Because of this, when a Fire mage wielded a Mithril Artifact wand with pure Fire mana, then he would find the potency of his fire spells increased by almost thirty percent.

However, the downside of this was that he couldn't wield any other Mithril Artifact, or else it would interfere with the effects of the first Artifact. 

For example, if a mage used a Fire Mithril wand and a Water Mithril wand at the same time to increase the power of his Steam-related spells, then the two Mithril Artifacts would only cancel each other out.