The strategy is basic Truth, but to use Reuniclus to manipulate the energy for the dragon's outrage attack and also to use Cofragrius for OHKO and getting rid of damage. Vileplume because Reuniclus doesn't work well without it (I tested without Vileplume, just didn't work as Reuniclus always got catchered) The Donphan is because many people run EelZone in my meta, and that's pretty much it.
Pokemon:
2 Donphan HGSS 107
2 Phanpy HGSS 77
1 Cleffa HGSS 17
2 Pichu HGSS 28
3 Oddish UD 60
2 Gloom UD 27
2 Vileplume UD 24
1 Doduo UD 45
1 Dodrio UD 11
2 Zekrom BW 114
1 Reshiram BW 113
3 Solosis BW 55
2 Reuniclus BW 57
2 Cofagrius NV 46
2 Yamask NV 44
2 Kyurem NV 34
2 Duosion NV 51
32 cards
T/S/S
3 Pokemon Collector
1 Professor Oak's New Theory
3 Rare Candy
3 Sage's Training
4 Twins
1 Pokemon Communication
14 cards
Energy:
4 Rainbow Energy
4 Double Colorless
2 Psychic Energy
3 Fighting Energy
14 cards
Pokemon:
2 Donphan HGSS 107
2 Phanpy HGSS 77
1 Cleffa HGSS 17
2 Pichu HGSS 28
3 Oddish UD 60
2 Gloom UD 27
2 Vileplume UD 24
1 Doduo UD 45
1 Dodrio UD 11
2 Zekrom BW 114
1 Reshiram BW 113
3 Solosis BW 55
2 Reuniclus BW 57
2 Cofagrius NV 46
2 Yamask NV 44
2 Kyurem NV 34
2 Duosion NV 51
32 cards
T/S/S
3 Pokemon Collector
1 Professor Oak's New Theory
3 Rare Candy
3 Sage's Training
4 Twins
1 Pokemon Communication
14 cards
Energy:
4 Rainbow Energy
4 Double Colorless
2 Psychic Energy
3 Fighting Energy
14 cards