Stage 1 Metal Will Eat You

This is my first deck!! Please give me feedback, I need to improve it.

Go first, and get a Cobalion or Radiant Jirachi in the active, and a Cufant on bench at minimum (preferably Bronzor and Varoom as well). If it's Cobalion, attach an energy to Cobalion, if Jirachi, attach to Cufant. Jirachi is to stall for setup; If the opponent kills it, you get any 3 cards, if they don't, you can set up properly. Use Cobalion's attack and then use Bronzong to move the energy around. Aim to get a Copperajah ex

This is my first deck!! Please give me feedback, I need to improve it.

Go first, and get a Cobalion or Radiant Jirachi in the active, and a Cufant on bench at minimum (preferably Bronzor and Varoom as well). If it's Cobalion, attach an energy to Cobalion, if Jirachi, attach to Cufant. Jirachi is to stall for setup; If the opponent kills it, you get any 3 cards, if they don't, you can set up properly. Use Cobalion's attack and then use Bronzong to move the energy around. Aim to get a Copperajah ex out as soon as possible. Revavroom is for draw and because it's metal type, Crystal Cave works on it.

Mid game, tank with Copperajah ex and deal huge damage with its Nosequake attack. Nosequake does 30 damage to each Benched Pokémon, so we need a way to heal. Enter: Crystal Cave! Healing 30 from Metal Pokémon can neutralise the effects of Nosequake (except for manaphy). If you have a Bronzong out, move energy away from a damaged Copperajah ex onto something else (either a basic or undamaged Pokémon) and use Cheryl. Then, move the energy back and continue (Credit for this nifty trick goes to the wonderful @darkintegral). Super Rod for recovering energy and Pokémon, everything else explains itself.

Always remember...

"Damaged elephants are a liability".                                                                                                                                                   -Chookling, 2023