After few testings, Tapu koko is horrible tho
I tried this decklist :
****** Pokémon Trading Card Game Deck List ******
##Pokémon - 22
* 1 Oranguru SUM 113
* 3 Shaymin-EX ROS 77
* 1 Marshadow-GX BUS 80
* 4 Joltik PHF 26
* 2 Bronzor TEU 100
* 2 Bronzong PHF 61
* 4 Pumpkaboo PHF 44
* 1 Tapu Lele-GX GRI 60
* 4 Lampent PHF 42
##Trainer Cards - 31
* 1 Dowsing Machine PLS 128
* 4 Trainers' Mail ROS 92
* 1 Rescue Stretcher GRI 130
* 2 Dimension Valley PHF 93
* 3 Professor Sycamore BKP 107
* 4 Battle Compressor Team Flare Gear PHF 92
* 2 Float Stone PLF 99
* 1 Teammates PRC 160
* 1 Guzma BUS 143
* 1 N NVI 101
* 1 Parallel City BKT 145
* 2 Choice Band GRI 121
* 4 Ultra Ball FCO 113
* 4 VS Seeker PHF 109
##Energy - 7
* 3 Metal Energy 17
* 4 Double Colorless Energy EVO 90
Total Cards - 60
****** Deck List Generated by the Pokémon TCG Online
www.pokemon.com/TCGO ******
Results are fine but on the PTCGO ladder but against Zoroark GX, because I had to cut field blower, I can't use Marshadow GX against Garbodor variants or use electropower to easily reach 210 damages (2HOKO most of the time). Zoroark GX variants are playing oricorio again now, so I think the matchup of this deck is around 30/70.
You don't have any answer to Archistoise or Trevenant as well. Hitmonchan/Wobbuffer destroys your setup.
I think Night March will be dead if this card is going to be played (and it should be played ...)