Leef

Leef (plural 'Leevs') are the currency that is used throughout the World Tree. As the Wold Tree is treated like its own world the correlation between the outside world's currency and the World Tree's currency have no exchange.

About
Leevs can only be used as a whole and therefore do not have quarters or pennies so they can only be used as 1 leef, 2 leef, 5 leef etc. Leevs also have no physical appearance and can only be used through a climbers Band.