Planks are used during the Liberation of Mazcab raid during the battle with Yakamaru. 20 are used during the final phase where Images of Yakamaru will appear in the pools; 10 are used to block the stun and sharknado pools each after the mirages are reduced to 0 life points. They cannot be banked. They will drop to the ground underneath the player holding them when they die or leave the group.
- Prior to 8 August 2015, these planks could be smuggled out of Yakamaru's fight if the player left their group or was kicked out by their leader.
- Before an update, the planks could be alchemised and disassembled, which made the fight impossible to complete.