You must give him a moon stone.
Happiny evolves into chansey if you give it the oval stone and level it up during the day, hope i helped
Level up a Happiny in daytime while it's holding the Oval Stone and it evolves into Chansey.
it evolves at level 36.
Are you trying to get a Chansey? Sounds like it to me! Make your Happiny hold the oval stone AND level it up between 4 am and 8 pm.
Lv 36.
It evolves at level fifteen and flaffy evolves at level 30 and it learns thunderpunch
It evolves at level 31
It evolves at level 55.
Taillow evolves at level 22.
Rattata evolves into Raticate at level 20.
aron evolves at level 32 laron evolves at level 40
Mareep evolves into a Flaaffy at Level 15, which then evolves into Ampharos at Level 30.