go to silver trench first then get lugia to join your team then meteor cave will be unlocked
20 floors.
No, you can not get Lucario in Mystery Dungeon Blue.
19 deoxys is on the the 20 (the real deoxys)
jirachi.
after Befriending Lugia Meteor cave will open up.
you can't trade on Pokemon mystery dungeon OK
you get it by entering meteor cave, which is found by blastoise the next morning after recruiting lugia
Yes there is a unknown dungeon in Pokemon blue mystery dungeon! You'll have to connect with your friends if you want to go there
buy it.
nope
No, only joy seeds are available in Mystery dungeon Blue and Red
yes all Pokemon evolve in Pokemon mystery dungeon blue rescue team after you beat Rayquaza and legendary Pokemon don't evolve.