Ok I have seen people say wish is a better way healing than moonlight but on my diamond my umbreon is lvl 100 and nvr got a chance to teach him wish and I dnt see any tm called wish in the guide book!?!
Find a male Togetic (or Togepi) and train it to level 28 where is learns Wish.
Breed Togetic with a female Pikachu/Raichu to obtain a baby Pichu that knows Wish.
keep breeding until you get a male Pichu. It's 50/50 so should only take a few eggs to get one.
level it up a bit and keep it happy so that it evolves into Pikachu.
Breed the male Wish Pikachu with a female Umbreon to get an Eevee knowing Wish.
level up and evolve into Umbreon.
Wish for Umbreon is an egg moves, so it learn Wish by breeding!
An easier way than the ones above is simply breed a female eevee evolution with a smeargle this can be used to teach any egg move to any pokemon in the ground egg group.
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