tattooed rune of spell focus

This rune can be any size and shape you wish, from a single dot or line, to a full body portrait.

To create the rune, you hold the needle to your skin (or other willing creature) where you want the tattoo to appear, pressing the needle there throughout the casting process. Utter the spell incantation. When the casting is complete, the needle turns into the ink that becomes the tattoo, which appears on the skin.

(If you have multiple magic tattoos (regardless of location and number,), they count as a single magic item in terms of magic item capacity)

This rune tattoo is designed to act as an arcane/ druidic/ bardic focus to channel the power of magic spells, and can be used as a replacement for the semantic component of spells, only needing direction of the user if the spell requires it.