pf2e.fyi
From Pathfinder Impossible Magic, which isn't enabled.

Drawn In Vital Ink

FEAT 8
Activity free action

Requirements During your last action, you succeeded at a melee Strike that dealt physical damage to a creature that can bleed.

After striking the target, you run a brush or finger along your weapon to collect a bit of its blood. For the next minute, you can Trace a Rune targeting the creature you drew blood from at a range of 60 feet (even if you're Tracing a Rune as a single action). Using Drawn in Vital Ink against a different creature requires you to wipe off the blood already on your weapon, ending the effect for the previous creature.

Pathfinder Impossible MagicORC