Answer:
people say you can get the mystic ticket by spelling mystic with the unknowns but it is not true so if you want the mystic ticket you need either hack or go to a Nintendo event
go to the pokemart then press the letterboard thing then type'LINK TOGETHER WITH ALL'then prss ok after that he will say after u save the game u will get the mystery gift then save and off your gba then turn it on again then u see the logo aledy lah then ur save file can....this...and that....and yadi yadi yada.link with other ruby or Sapphire(attach the cable then press mystery gift then u will get the ticket!
Caution:if it doesn't work don't blame me i tried and i got it just don't blame ok....