Renkan Seppa Sen

is a technique used by Ganju Shiba.

Description
Using his Earth Magic abilities, Ganju draws a trembling current, the sign of the Shiba clan, on a surface with his hand, allowing him to turn anything he touches to sand. Ganju can make a number of these symbols over a designated area in a specific pattern before casting another spell, which allows him to turn an even larger area to sand.