I want to use noivern. But I'm unsure on the nature. I'm building the move set. So far I have 2 greninjas I built. Timid and jolly. I also have a mega blaziken, thanks to qr codes and infernape. I also have 980 ability capsules. I'm going to try out hydregion.
They need a fairy/dragon type.
Already exists.
Noivern is essentially a fast special sweeper, so your best bets are either
modest nature (Boosts special attack, decreases regular attack) or
timid nature (Boosts speed, decreases attack). I'd recommend a modest nature. Noivern's speed level is pretty high to begin with so you don't need all of that speed, save some for your attacks. I invested most of my time trying to beef up it's special attack and speed. My move-set is
Heatwave, Hurricane, Draco Meteor and
Boomburst. These are all have pretty powerful attacks, so I know they'll do what I need them to do when necessary. I also gave my Noivern a wide lens for added insurance that my moves will always hit my opponent's Pokemon.
Hydreigon is basically the reverse of Noivern. You should give it a timid nature and train it in special attack and speed as well. My move-set is:
Flamethrower, Earth Power, Flash Cannon (for the fairies), and
Dragon Pulse.
As far as fire types go, Arcanine is my go-to Pokemon for that. His stats are pretty well-balanced all around.
My mega is Blastoise. Mega Blastoise is a super tank. With its mega launcher ability, all you go to do is add "pulse" moves to it and it gives those attacks an extra boost in damage. The mega evolution pretty much brings it's defense and special defense capabilities to a whole new level. You'd be hard pressed to kill this thing in one shot.