When consumed, it gives a 10% chance per log cut of finding a wood spirit when woodcutting. Once found, the spirit will send the logs you cut directly to your bank for the next 30 seconds, including trees planted yourself in a tree farming patch, giving the message "A wood spirit appears and offers to carry your next few logs to the bank." whenever logs are banked. Each dose of potion lasts for 6 minutes. A message will warn you 1 minute before the timer runs out. Note that a wood spirit may be found more than once with each dose.