Xavian, The Star Dragon

If all 6 Primary dragons are on the field,
Special summon the Dragon prince,
from your Graveyard, library, or hand.
You can only summon Xavian, The Star Dragon
if you have a White type on the field.
This card in indestuctable. When ever you
block, put a +3/2 counter on
Xavian, The Star Dragon