Guidance of Mercury

Guidance of Mercury (水銀の案内, Suigin no An'nai) or quite simply, Mercury Magic (水銀の魔法 Suigin no Mahō), is a Holder Magic that acts similar to a Caster Magic, and is utilized by Asch Richelieu.

Trivia

 * This magic is inspired from Volumen Hydragyrum from Fate/Zero.