Toxicroak/Mewtwo Deck needs help.

[BirdsOfJay]

Pokemon:
2 Toxicroak EX (FF 41)
3 Sigilyph (LT 66)
3 Trubbish (LT 67)
3 Garbodor (LT 68)
3 Mewtwo EX (LT 54)
3 Mew EX (DR 120)

Trainers:
4 Hypnotoxic Laser (PS 123)
2 Virbank City Gym (PS 126)
2 N (NV 101)
1 Shauna (XY 127)
2 Professor Juniper (PF 116)
3 Muscle Band (XY 121)
2 Float Stone (PF 99)
4 Lysandre (FF 90)
1 Pal Pad (FF 92)
2 Professor's Letter (XY 123)
3 Startling M phone (FF 97)
3 Pokemon Center Lady (FF 105)

Energy:
10 Psychic Energy (XY 136)
4 Double Colorless Energy (LT 113)

The idea of this deck is to use a combination of poison with virbank city, and then use mew to knock others out with other attacks.

The decks that I can't beat generally revolve around a Yveltal Ex, and I can't seem to counter it. They generally have a garbador that takes out Sigilyph's ability.

 

[efyoo2]

I run this deck online to take a break from meta decks. I have some recommended changes since Garbodor is turning off abilities anyway and Mew is a big target being a fragile EX.

You were missing an ACE SPEC and pokeballs. My list is slightly different, but I think you might find it easier to setup.

Pokemon: (10)
3 Toxicroak EX (FF 41)
2 Trubbish (LT 67)
2 Garbodor (LT 68)
3 Mewtwo EX (LT 54)

Trainers: (38)
1 Dowsing Machine ACE-SPEC
4 Hypnotoxic Laser (PS 123)
3 Virbank City Gym (PS 126)
4 N (NV 101)
4 Professor Juniper (PF 116)
3 Skyla
2 Colress
3 Muscle Band (XY 121)
2 Float Stone (PF 99)
2 Lysandre (FF 90)
1 Pal Pad (FF 92)
1 Professor's Letter (XY 123)
1 Startling M phone (FF 97)
1 Super Rod
2 Switch
4 Ultra Ball

Energy: (12)
8 Psychic Energy (XY 136)
4 Double Colorless Energy (LT 113)