If u have any vanity, item or pokemon with particle that raises its value through time then ur chances to encounter a shiny get low.
Economy logarithms work that way, which explains new ip accounts gets shinies quicker than old..
Now, forget what i said above, shiny rate is FAIR to all accounts
Same thing with rocky helmet and rough skin
Enduré + destiny bond is a good strat early game, but in the end game won't be useful
Is there a forum where this has been discussed before !?