In the centre of The Lost Grove is the great tree. When the great tree requires additional nutrients, it channels its needs through the magical mushrooms found to the south-east. It does so by having the mushrooms change to one of 5 colours: red, yellow, blue, green or purple. The colour of each mushroom informs which essence must be gathered from the wisps. Once the essence/energy has been gathered from the wisps it is made into an elixir and offered to the great tree.