If anyone disagrees with a placement on this list or thinks something should be included, feel free to post here.
Tier 1:
ZekEel
Darkrai
Tier 1.5:
MTC
Mono Fighting
Tier 2:
Klinklang
Empoleon
Vileplume variants
Quad Entei
Durant
Tornadus/Terrakion/Mewtwo
ZekEel
Darkrai
Tier 1.5:
MTC
Mono Fighting
Tier 2:
Klinklang
Empoleon
Vileplume variants
Quad Entei
Durant
Tornadus/Terrakion/Mewtwo
This list is for new and returning players to the game to use to see what is meta at the moment. This list could also be a good source of seeing what to test against for semi-competitive players, and below I will be including decklists for all the decks above.
Zekrom/Eelektrik:
4-3 Eelektrik
2 Zekrom
2 Terrakion
2 Smeargle
2 Mewtwo EX
1 Shaymin
Energy (12):
8 Electric
4 Fighting
Trainers (32):
4 Professor Oak's New Theory
4 Junk Arm
3 N
3 Level Ball
3 Professor Juniper
3 Pokemon Catcher
2 Eviolite
2 Pluspower
2 Switch
2 Dual Ball
1 Skyarrow Bridge
1 Super Rod
1 Random Receiver
1 Energy Search
2 Zekrom
2 Terrakion
2 Smeargle
2 Mewtwo EX
1 Shaymin
Energy (12):
8 Electric
4 Fighting
Trainers (32):
4 Professor Oak's New Theory
4 Junk Arm
3 N
3 Level Ball
3 Professor Juniper
3 Pokemon Catcher
2 Eviolite
2 Pluspower
2 Switch
2 Dual Ball
1 Skyarrow Bridge
1 Super Rod
1 Random Receiver
1 Energy Search
Darkrai Varients (below is a Darkrai/Tornadus list):
3 Darkrai-EX
2 Tornadus-EX
2 Smeargle UD
3 Skyarrow Bridge
4 Switch
4 Dark Patch
3 Ultra Ball
4 Junk Arm
4 Victory Medal
4 N
4 PONT
4 Super Scoop Up
4 Professor Juniper
2 PlusPower
9 Darkness Energy (Basic)
4 DCE
2 Tornadus-EX
2 Smeargle UD
3 Skyarrow Bridge
4 Switch
4 Dark Patch
3 Ultra Ball
4 Junk Arm
4 Victory Medal
4 N
4 PONT
4 Super Scoop Up
4 Professor Juniper
2 PlusPower
9 Darkness Energy (Basic)
4 DCE
MTC:
4 Celebi Prime
3 Mewtwo-EX
1 Tornadus-EX
2 Smeargle
1 Tornadus
1 Regigigas-EX
4 Switch
3 Skyarrow Bridge
4 PONT
4 Juniper
4 N
2 Random Receiver
3 PlusPower
2 Eviolite
4 Pokemon Catcher
4 Junk Arm
10 Grass Energy
4 DCE
3 Mewtwo-EX
1 Tornadus-EX
2 Smeargle
1 Tornadus
1 Regigigas-EX
4 Switch
3 Skyarrow Bridge
4 PONT
4 Juniper
4 N
2 Random Receiver
3 PlusPower
2 Eviolite
4 Pokemon Catcher
4 Junk Arm
10 Grass Energy
4 DCE
Mono-Terrakion:
4 Terrakion (NV 99)
4 Exp Share (ND 87)
4 Switch (BW 104)
4 Professor Oak's New Theory (HGSS 101)
4 Professor Juniper (BW 101)
4 PlusPower (BW 96)
4 Junk Arm (TR 87)
2 Lost Remover (CL 80)
4 N (NV 101)
3 Revive (BW 102)
3 Heavy Ball (ND 88)
2 Random Receiver (DE 99)
4 Pokemon Catcher (DE 111)
1 Eviolite (NV 91)
12 Fighting Energy (BW 110)
1 Rescue Energy (TR 90)
4 Exp Share (ND 87)
4 Switch (BW 104)
4 Professor Oak's New Theory (HGSS 101)
4 Professor Juniper (BW 101)
4 PlusPower (BW 96)
4 Junk Arm (TR 87)
2 Lost Remover (CL 80)
4 N (NV 101)
3 Revive (BW 102)
3 Heavy Ball (ND 88)
2 Random Receiver (DE 99)
4 Pokemon Catcher (DE 111)
1 Eviolite (NV 91)
12 Fighting Energy (BW 110)
1 Rescue Energy (TR 90)
Durant:
4 Durant NV
1 Rotom UD
4 Collector
3 Level Ball
4 Twins
3 Juniper
3 PONT
2 N
2 PokeGear 3.0
4 Revive
4 Lost Remover
3 Crushing Hammer
2 Pokemon Catcher
1 Switch
1 Black Belt
4 Junk Arm
3 Eviolite
2 Prism Energy
4 Special Metal
4 Basic Metal
1 Rotom UD
4 Collector
3 Level Ball
4 Twins
3 Juniper
3 PONT
2 N
2 PokeGear 3.0
4 Revive
4 Lost Remover
3 Crushing Hammer
2 Pokemon Catcher
1 Switch
1 Black Belt
4 Junk Arm
3 Eviolite
2 Prism Energy
4 Special Metal
4 Basic Metal
Klingklang varients:
4-2-3 Klingklang BW
2 Darkrai-EX
2 Mewtwo-EX
1 Terrakion NV
1 Groudon-EX
1 Cobalion NV
3 Max Potion
4 Junk Arm
3 Pokemon Catcher
4 N
4 Twins
3 Rare Candy
2 Heavy Ball
4 PONT
2 Professor Juniper
2 Eviolite
2 Dual Ball
4 Prism Energy
4 Rainbow Energy
3 Basic Metal Energy
2 Darkrai-EX
2 Mewtwo-EX
1 Terrakion NV
1 Groudon-EX
1 Cobalion NV
3 Max Potion
4 Junk Arm
3 Pokemon Catcher
4 N
4 Twins
3 Rare Candy
2 Heavy Ball
4 PONT
2 Professor Juniper
2 Eviolite
2 Dual Ball
4 Prism Energy
4 Rainbow Energy
3 Basic Metal Energy
Mono-Entei:
4 Entei-EX
2 Smeargle UD
4 EXP Share
4 Pokemon Catcher
4 Junk Arm
4 PONT
4 Professor Juniper
3 N
2 Random Receiver
2 PlusPower
2 Defender
4 Potion
3 Skyarrow Bridge
3 Switch
3 SSU
12 Fire Energy
2 Smeargle UD
4 EXP Share
4 Pokemon Catcher
4 Junk Arm
4 PONT
4 Professor Juniper
3 N
2 Random Receiver
2 PlusPower
2 Defender
4 Potion
3 Skyarrow Bridge
3 Switch
3 SSU
12 Fire Energy
Tornadus/Terrakion/Mewtwo:
2 Mewtwo-EX
3 Tornadus
3 Terrakion
1 Tornadus-EX
2 Smeargle UD
4 EXP Share
4 Pokemon Catcher
4 Junk Arm
3 Dual Ball
4 PONT
4 Professor Juniper
3 Skyarrow Bridge
3 Switch
2 PlusPower
2 Defender
3 N
9 Fighting Energy
4 DCE
3 Tornadus
3 Terrakion
1 Tornadus-EX
2 Smeargle UD
4 EXP Share
4 Pokemon Catcher
4 Junk Arm
3 Dual Ball
4 PONT
4 Professor Juniper
3 Skyarrow Bridge
3 Switch
2 PlusPower
2 Defender
3 N
9 Fighting Energy
4 DCE
An example of a Vileplume list:
4-4 Accelgor
4-1-3 Vileplume UD
3-3 Sunflora GS
3 Celebi Prime
3 Rare Candy
4 Pokemon Communication
4 PONT
2 N
4 Professor Juniper
4 Pokemon Collector
4 DCE
10 Grass Energy
4-1-3 Vileplume UD
3-3 Sunflora GS
3 Celebi Prime
3 Rare Candy
4 Pokemon Communication
4 PONT
2 N
4 Professor Juniper
4 Pokemon Collector
4 DCE
10 Grass Energy
Empoleon/Terrakion:
Pokemon (13):
4-1-4 Empoleon
3 Terrakion
1 Shaymin
Energy (12):
8 Water
4 Fighting
Trainers (35):
4 Professor Oak's New Theory
4 Rare Candy
4 Pokemon Collector
3 N
3 Pokemon Catcher
2 Professor Juniper
2 Dual Ball
2 Switch
2 Pluspower
2 Ultra Ball
2 EXP Share
1 Super Rod
1 Random Receiver
2 Max Potion
1 Pokemon Communication
4-1-4 Empoleon
3 Terrakion
1 Shaymin
Energy (12):
8 Water
4 Fighting
Trainers (35):
4 Professor Oak's New Theory
4 Rare Candy
4 Pokemon Collector
3 N
3 Pokemon Catcher
2 Professor Juniper
2 Dual Ball
2 Switch
2 Pluspower
2 Ultra Ball
2 EXP Share
1 Super Rod
1 Random Receiver
2 Max Potion
1 Pokemon Communication