Entei, Raikou, and Ho-Oh question

I'm aware that since these are runners their nature/ivs remain the same regardless of how many times you encounter them. However, I've read that if you defeat them and come back after you beat the E4 they are revived with new natures/IVs. My question is whether or not this is repeatable? I.e., can I defeat them once, and then defeat them a SECOND time after beating the E4 and then proceed to go back and defeat the E4 again and get a THIRD shot at IVs/natures? Or does this only work twice?

Also, I'm getting frustrated with Ho-Oh and was debating killing him and coming back. The only thing holding me back is that I've read that the second time this is done he stays with the same nature/IV. That is, even after a soft-reset he won't change his nature/IV if you wait until after the E4 to catch him (after KO-ing him).

Any insight on the two matters would be GREATLY appreciated.

i heard that u can face all the legendaries again after u beat the E4

i thought on balbieda i read that the dogs get revived and start runing around again but i could be mistaken. or i could of heard form someone else that told me about it

did u restart until u got it(saved b4 encountering it and start from last saved point) or did u just luckily got it?

quote Pokemon Expert

I know. I defeat Entei, Raikou, Lati@s, and when you beat the Elite 4, they come back with new nature, and possibly shiny. It's called the Post Elite 4 Method. Also, can you Soft Reset for a shiny Entei, Raikou, or Lati@s? As for Ho-Oh, I'm not sure about his nature, but if you beat him and beat the E4 again, he will come back.

You can soft reset for the interact-able ones, but I wouldn't know for the dogs. Either way, it is not worth it. The odds of you getting what you're seeking for are really, really low however. I wouldn't recommend it at all.