Benefit: The magus can use special scar-based tattoos called spell-scars on his skin to cast or prepare spells, much like scrolls. He can cast a spell from a spell-scar exactly like casting from a scroll; the ink and scars vanish when the spell is cast. The magus can also prepare spells from his spell-scars without expending them, similar to a wizard using the Spell Mastery feat.
The magus does not need to be able to see his spell-scar to use it. A magus has room on his skin for 18 total spell levels of spell-scars, which he can create using the rules for scribing scrolls (although they do not require the Scribe Scroll feat).
Pathfinder Player Companion: Blood of the Moon © 2013, Paizo Publishing, LLC; Authors: Tim Akers, Neal Litherland, David N. Ross, and Tork Shaw.