That made things a lot clearer. :)
I would go for a Buzzwole/Garbodor/Shrine of Punishment deck.
You get a good matchup without breaking the bank.
If he is conservative with his resources Shrine will tear down his Rayquazas and if he isn't - well... trashlanche...
An important question to ask oneself is WHY?
Why do I want a standard deck?
Obviously to be able to play Pokémon games in standard format but why do I want that?
Is it because I want to have fun with friends and they think it's fair that everybody play the same format?
Find a deck at the same...