How many floors to get wonder egg in Pokemon mystery dungeon explorers of time?

Answer 1

first you have to talk to sunflora a few days after you beat the guild then talk to Mr. Mime next to the kecleon shop and he'll talk about scizor being trapped in a block of ice at crevice cave. Once you get to the there, you have to battle froslass then when you save scizor, a few days later after beating froslass, talk to sunflora at the guild, then she'll talk to you about surround sea and will gain access. Then when you get to the 20th floor, you will find the wonder egg.