reserving Moltres
Moltres @ Leftovers  
Ability: Flame Body  
EVs: 248 HP / 36 Def / 224 Spe  
Timid Nature  
IVs: 0 Atk  
- Flamethrower  
- Roost  
- Will-O-Wisp  
- Defog
Moltres as a 
check (or counter, I'll leave Moute to decide):
Technically it could be a counter, so I'll mention this quickly. If you 
somehow manage to land Will-O-Wisp on Doublade, you basically counter it unless it nails a crit shadowclaw on you after rocks. Doublade isn't really doing much anyways, unless it gets an SD up before attacking.
252+ Atk Doublade Shadow Claw vs. 248 HP / 36 Def Moltres: 118-139 (30.8 - 36.2%) -- guaranteed 4HKO after Leftovers recovery
However, my reasoning for calling it a check is that if it manages to nab a Swords Dance when you switch into Moltres, avoids Will-O-Wisp, doesn't get Flame Bodied, then Claw into Sneak KOs Moltres.
+2 252+ Atk Doublade Shadow Claw vs. 248 HP / 36 Def Moltres: 234-276 (61 - 72%) -- guaranteed 2HKO after Leftovers recovery
+2 252+ Atk Doublade Shadow Sneak vs. 248 HP / 36 Def Moltres: 135-159 (35.2 - 41.5%) -- 77.7% chance to 3HKO after Leftovers recovery
So yea. 
Moving on, we have Gligar as a 
counter (It recovered from Last Week's onslaught against it 
 
Gligar @ Eviolite  
Ability: Immunity  
EVs: 252 HP / 156 Def / 100 SpD  
Impish Nature  
- Earthquake  
- Stealth Rock / Defog
- Roost  
- Taunt / Knock Off
Gligar is a Counter to Doublade because it can Knock Off it's eviolite and start Eqing and roosting to keep dealing with it, or Taunt it and EQ. Doublade has no solid recovery and even at +2, it's attacks are kinda pitiful.. 
+2 252+ Atk Doublade Gyro Ball (76 BP) vs. 252 HP / 156+ Def Eviolite Gligar: 123-145 (36.8 - 43.4%) -- guaranteed 3HKO
That's Doublade's strongest attack VS Gligar. It barely does around 42% on average. Meanwhile, 
Vs Non-Knocked off Doublade: 0 Atk Gligar Earthquake vs. 240 HP / 0 Def Eviolite Doublade: 84-98 (26.3 - 30.7%) -- guaranteed 4HKO
Vs Knocked Off Doublade: 0 Atk Gligar Earthquake vs. 240 HP / 0 Def Doublade: 120-144 (37.6 - 45.1%) -- guaranteed 3HKO
Basically, Gligar is beating this thing 1v1 essentially every time unless you run into some wack hp ice Doublade.