Great Mallet (Su)

Beginning at 2nd level, a forest master begins to awaken magical abilities within the wood and metal that make up his maul. Any maul used by a forest master is treated as if it were a +2 maul with either the frost or shock property (the forest master decides each round whether the weapon's extra damage is cold or electricity). If the weapon has additional abilities (such as defending), these abilities still apply, and if the weapon has an enhancement bonus better than +2 the higher of the two bonuses is used. The maul does not gain these abilities if it is not wielded by the forest master. At 6th-level, the forest master's maul acts as a +2 icy burst or +2 shocking burst weapon, with the forest master deciding each round what effect the weapon has. At 9th level, the forest master's maul acts as a +3 mighty cleaving weapon in addition to its other properties (including its icy burst or shocking burst ability).