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The Tree of the Mulawins is a sacred tree that can be found in the Mortal Realm. The Mulawins also call it as their sacred mother tree. According to Ravenum, when the Tree dies the whole race of Mulawins die too. It did not appear in Encantadia (2005) or Encantadia (2016) but had connections.
Connection to Encantadia (2016)
The tree was never shown in this series, but it was mentioned that the Mulawin flute was crafted using a branch taken from this tree. And the flute was given to the First Queen of the Diwatas, Cassiopea, so that whenever she needs help a mulawin warrior will be there as they do not forget their strong allegiance with the Diwatas.