Official Move Approval III

[Gilgamesh]

Burrow – 300 OM (Requires Physical Strength, Stealth)
Using his hands he begins to literally dig/bore into the ground, like a dog trying to dig up a bone, allowing him to quickly tunnel into it through continuous use. Which lets him travel underground as if he were moving at normal speed like a land shark. In combat the tunnels collapse behind him unless he's preoccupying a certain space underground, making it only useful for travel and setting up possible attacks from underneath the earth. Unfortunately he can't use any other moves or attacks involving his hands unless he stops tunneling, there also has to be a solid material present similar to earth in order to be used.

Just for clarifications sake, how long does it take for him to dig up and actually go beneath the ground? Last question for now, can people tell where he is during this move or is it unnoticeable to the naked eye without prior knowledge