Is their a way to automatically add Gargantua Evolution and Ultimate Garga to the hand and if so can it be used in dragon world
No.
And there shouldn't be.
That level of consistency would be way too OP for a deck that is already one of the best offensive decks out there.
Garga can be searched easily enough already.
But since Gboost ex counts as every gboost cant the gar units that add those singular gboost get Ultimate Garga from the deck
Yes, but they can't add Evolution. Just Ultimate. I did say that Garga could be searched easily enough already.
You asked for one that could add both, not just one.
What do you think?