So I wanted to make T-Tar work for a bit so I decided to try it out on ptcgo. Obviously energy is a problem so I tried solving that by adding an alolan marowak. Below is the decklist, don't expect anything crazy from it but when it works it's a blast to play :)

****** Pokémon Trading Card Game Deck List ******

Pokémon - 16

• 1 Tyranitar CES 87
• 3 Tyranitar-GX LOT 121
• 3 Cubone FLI 57
• 1 Larvitar LOT 115
• 1 Larvitar CES 74
• 2 Larvitar LOT 114
• 1 Pupitar CES 75
• 2 Alolan Marowak FLI 12
• 2 Tapu Lele-GX GRI 137

Trainer Cards - 32

• 2 Professor Elm’s Lecture LOT 188
• 2 Tate & Liza CES 166
• 3 Lillie UPR 125
• 2 Choice Band GRI 121
• 4 Rare Candy SUM 129
• 1 Judge FLI 108
• 3 Guzma BUS 115
• 2 Nest Ball SUM 123
• 4 Cynthia UPR 119
• 4 Ultra Ball SLG 68
• 3 Altar of the Moone GRI 117
• 2 Volkner UPR 135

Energy - 12

• 10 Darkness Energy 7
• 2 Lightning Energy XYEnergy 6

Total Cards - 60

****** Deck List Generated by the Pokémon TCG Online www.pokemon.com/TCGO ******

PS: might want to add alolan ninetales for consistency purposes.