It seems any legendaries you failed to catch will come back after you beat the Elite Four (if you've already done it, go beat them again).
You have to defeat the Elite Four again to catch Terrakion, Virizion, and Cobalion.
If you killed Virizion, don't save! Turn off the DS and go back. If you save, he will not come back.
(this is a joke) I don't know but if it doesn't at least you'll still have good coverage ;)
When You Come Back to Me Again was created on 2000-05-08.
Sometimes They Come Back... Again was created in 1996.
The duration of Sometimes They Come Back... Again is 1.63 hours.
either save before the battle or come back to that spot in about 2 mounths
Will Ye No Come Back Again was created on 1975-11-23.
It never did come back... did it?
To even get to Virizion, you have to catch Cobalion in Mistralton Cave. Virizion, is in Pinwheel Forest.
I think it will never come back again. but if we can still support them it maybe they will come back
After knocking out Virizion and beating Iris in the Pokémon League building, you will be able to find Virizion back in Route 11 however it will now be at Level 65 instead of Level 45.