Blissey doesn't evolve!
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Blissey won't evolve.
evolve your chancey
Train a Chansey and will evolve.
Actually, Happiny doesn't have to level up in order to evolve into a Chansey. You have to make it hold an Oval Stone first. Then Give Chansey a shiny stone to evolve it into a blissy. ------------------------------ Chansey evolves when you befriend it (not by a stone).
Chansey evolves by Happiness, not by level. Can evolve at any level, depends on how much he/she likes you. Chansey starts with a Happiness of 140, you have to get this value over 220 for he or she to evolve. To do this, you can have him/her hold the Soothe Bell, walk with him/her in your party allot, have him/her massaged, use lots of items on him/her or level him/her up allot for further information see: http://bulbapedia.bulbagarden.net/wiki/Happiness
You have to go to fuchsia city and go to the safari zone and catch a chansey and evolve it you have to train it.
You could get a Happiny from the guy on the route through Hearthome, evolve it and evolve it again, or you catch a chansey further up of the milk cafe up of Solaceon town, They need love to evolve.
You Cannot Get Blissy If You Have Chasney You Can Evolve EXAMPLE: Chasney Evolves Into Lugia Or Ho-Oh IDK
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
well like other Pokemon games you get cleffary or cleffa (evolve it first) use a moon stone and it will evolve into a blissy sorry that's wrong i got it wrong actually its chansey and you use a dawn stone i think i got one level 100 its attacks are metrenome frenzy plant blast burn and hydro cannon
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.