Hydreigon+Doublade! (Bulky Offense Core)
In my oppinion, this core is in this metagame as good as in the other meta's, not much changed.
Yo guys, this Core is very good, because Doublade takes like all weaks from Hydra and Hydra all weaks from Doublade, very effective!
Both mons are in upper Ranks and very usefull in UU Meta!
I'll tell you some mons, they can stop really easily:
Heracross:
Doublade can easily switch on Megahorn and Close Combat, and Doublade even takes a Knock Off, so as Hydreigon.
Florges:
Hydreigon can't do much against Florges, so Doublade can just switch in and take like 25% dmg, a great deal!
Darmanitan/Entei:
Both mons are very good against Doublade, so just switch on Hydreigon, he will take it and can maybe Roost on these Mons, if he isn't Scarf!
Swampert:
Swampert stops Doublade from sweeping, and it hits Doublade very effective, so Hydra can just come in and maybe drop a Draco ;D
These were just some examples, there are a lot of mons this Core stops!
And for the new ones:
Celebi:
Gets easily stopped by both, but you have to look for Dazzling Gleam or Shadow Ball, so the other mon easily handle it.
Sylveon:
To be honest, Specs Sylveon is a big Thread against this Core because Doublade only takes one hit, and Hydra dies instantly, so look up for Sylveon.
Conkeldurr:
Same as Heracross, Hydra takes Knock off and Doublade takes the Fighting Move
The Core is a very effective Type Core, because the Types are the key for this Core, they cover themselves very, very good, if they have to switch-in something or to deal damage, and Hydra can help Doublade to sweep.
I apologize for my bad english!