Going back to my Main Cyberdark Deck(need help trimming it down)?

solemn is good card like Edward said. they are good against most decks out there, it save lives. its possible however, to take them out in a mirror match against tele dad decks, and put in magic drains and compulsory devices, but add them back to main deck, and side them when you don't need them, theres reason for it being so expensive right now.