The Titan Exotics were intimately linked to the Silver Tree, which was first addressed as an actual element and not only an idea, in the “Book of Unveiling”, as the giant tree that stood in the middle of the Garden. It was then cut during the conflict that broke between the Winnover and the Gardener, and now is the giant mesa we can see at the centre of the Black Garden - a tree stump, actually.
There is another mention in “Mk. 44 Stand-Asides” of the Titan (https://www.ishtar-collective.net/entries/mk-44-stand-asides?highlight=silver+tree) which are the ideal completion of the Ruin Wings if the Exotics could be equipped all together.
Another mention is when Oryx in the “Book of Sorrows”, destroyed and consumed the Gift Mast (https://www.ishtar-collective.net/cards/xlvi-the-gift-mast?highlight=silver+mast) from the Harmony - another prototype of the Tree of Silver Wings that the Traveller tried to install into one of his protected civilization, just as ours with the one on Io before he was beaten during the Collapse.
We still don’t have the full picture about the powers and the meaning of this tree, but it runs deep into the lore of Destiny since the first chapter, and the implications are heavy.