Learn to summon Charon and power up Skullmage in GrimGrimoire OnceMore's Acheron chapter. Details on Charon's Anima Drain.
Walkthrough:
Level 1: Summon - Charon
Summon the familiar, Charon. He has no direct attacks initially but is used to transport your familiars across large maps. He cannot transport large familiars like Dragons.
Level 2: Charon: Power Up
This upgrade raises the movement speed of Charon. If you plan to use Charon, you need this upgrade to help prevent his death.
Level 3: Skullmage: Power Up
This upgrade increases the Skullmage's maximum MP (Mana Points).
Level 4: Charon: Anima Drain
This is the only direct attack Charons have. It allows them to
