This form represents Obito in his form as Jûbi's Jinchûriki, after he managed to control it completely during the 4th Great Ninja War.
You can see the orbs of Chakra surrounding him, the growths and the marks of Magatama on his body.
The base represents the Divine Tree, or Jûbi in his original form.
The Chakra seed on the base provides a superb contrast with Obito.
Obito is shown here ready to attack, his fearsome Shakujo made of black Chakra in his left hand and an orb ready to be thrown in his right.