I think I need to cross DB with a Giant (or better SuperGiant) Eclipse (or het eclipse), Tremper Albino, het Blizzard.
Then, in F2, I should have some chances to have Giant or Super Giant Diablo Blancos.
If you crossed a super giant to a DB,you'd get giants het DB.then breed them back and you'll have a chance at giant,and I think super giant DB too in the next generation.Let me know if any of this is wrong.