Yes, it's called the epilogue, and it has lots of new adventures in store.
You can't catch Pokemon in mystery dungeon games. You can recrute Pokemon by defeating them and saying yes if they ask to join your team.
start collecting legendary Pokemon
By defeating foes.
You continue with the adventure- evolveing your starters becomes an option then
as with the other Mystery Dungeon games, you keep playing, of course!
after defeating rayquaza in sky tower
Get Petrify Orbs and Spurn Orbs!!!
Well I hope so!
Pokemon cannot be traded in the Mystery Dungeon series.
No. Since it is another generation of Pokemon, it is impossible to link the two games.
No.
talk to spinda after defeating rayquayza 2 to 3 missons later