Metang

It is formed by two Beldum joining together. Its steel body won't be scratched if it collides with a jet.

Poke-BODY — Metallic Lift: If Metang has any Metal Energy attached to it, the Retreat Cost for Metang is 0.

Psychic (40+): Does 40 damage plus 10 more damage for each Energy attached to the Defending Pokémon.