I know a great name for the deck. How about.... Darkrai/ Hydreigon?
DarkGon sounds usable.
Well that's...boring.
When in doubt use on of the basic naming schemes! Mash the names together or use initials, so DH or DarkGon sounds usable.
That's even worse. If you give it a name it should make sense, like HD high definition deck.
I think we should call it, Ghestis' Dark Revenge.
Spoken from Ghestis himself.
HEY! That was from the past! I left from his body months ago!