I'm not going to tell you what to drop/add because it would take me a week.
Instead of that, i'm going to give you an updated deck that is perfect to compete with the current TIER 1-2 decks.
Cards that are usefull also are:
Black Horn of Heaven,
Debunk,
Mind Crush,
...
Gem Knight Pearl could be replaced with Number 101.
This is how i would play the deck...
Good luck and let me know how your Future Sams are doin!!!!