1st u go to hidden cove and catch regirock and relicath then put replace them with cradily
and armaldo then go to ice rift and catch regice then put in all three of them with any
other 3 pokemon and regi tower will be unlocked in the battle towers
section................Happy?

i forgot to tell u u need to get registeel too from magic mountain using regirock and
regice with the unknowns that spell regi then u unlock regi tower and if u beat it u get
regigias

I TRIED BUT I DID NOT GET IT