For just 1 mana, it gives your creature +0/+3 and hexproof until end of turn to save it from removal while you make it tougher in combat
Pinnacle Starcage is really here just to stem the bleeding against those kinds of decks, however it has a lot of other relevancy in the current format
You may choose the second and third mode even if you don't have an enchanted or equipped creature at the time this ability triggers
With the ability to Special Summon any Dragon from the Main Deck, Hand, GY, Banished pile, or Deck through their arsenal of Link Monsters, this theme runs opposite to the previous Link themes as you need to summon to empty zones that multiple Link monsters point to
The mystery's a bit less vague on this one though: Rather than being a potential buyout, there seems to be a direct correlation to Terra, Herald of Hope, another early reveal from Final Fantasy