This has probably been done before, in fact I’ve seen a similar post by loppy654, who also did a phenomenal job.
My first sprite so far, hope I improve!
Name: Contract Pokémon
Ability: Cursed Body (HA: Neutralizing Gas)
Dex: Long ago, experiments were performed proving that inhaling its mist can save victims of fatal injury and disease. However, on their deathbeds, subjects were seen exhaling the mist in agonizing pain, making the mist ‘a contract with the devil.’
Hope you enjoyed!