Other Player Permanent Triggers

I have seen this occur a few times where an effect is allowed to target or trigger on enemy permanents. Unfortunately it is intermittent and will not always occur.

1. Creature triggers such as Mikaeus the Unhallowed's undying or Vigor's +1/+1 counter damage prevention. Yarok of the Desecrated duplicating other players' triggers such as Souls Attendant.
[https://www.slightlymagic.net/forum/viewtopic.php?f=70&t=30246&p=247502#p247502](url)
[https://www.slightlymagic.net/forum/viewtopic.php?f=70&t=30246&start=15#p247359](url)
[https://www.slightlymagic.net/forum/viewtopic.php?f=70&t=30246&p=247938#p247938](url)

2. Moritte of the Frost allowing choosing other players' permanents. Sakashima of a Thousand Faces I can confirm does not have this issue.
[https://www.slightlymagic.net/forum/viewtopic.php?f=70&t=30246&p=247714#p247714](url)