Reaver's Magic Paint Brush

Name: Excalibrush
Rank: D?
Appearance:
Abilities: Excalibrush! The holy brush!!(of Dom's design) This legendary brush has the POWAH of infinite black ink! Ok now enough of exaggeration, this magical item is simple, this brush can produce its own ink for painting. The ink will never run out but it is rather low quality ink. This brush can be used with other colors as whatever paint/drawing material it is dipped in will replace the black ink with a simple clear brush, though its just a regular brush when used with other inks and colors, once the brush is cleaned, the original ability of the brush returns and ready to be used again.

Hmm ok solely because it has magical properties, bump it up to C-rank and I'll be deducting 500J