Yep, I guess Kiki-Jiki doesn’t work. My bad for misreading the card. You understand correctly about the Silence scenario. Back of my head too, operative word being “back” — right now, the interaction is quite niche!

I have a few questions all about the end step/clean-up, to make sure I understand this correctly.

-You said that that both AP and NAP get priority in the clean-up step if there is a triggered ability. The example you give is Kiki-jiki token dying, but doesn’t this one die at the beginning of the end step, not the clean-up?
-If somehow there is a trigger in the clean-up (Dead weight on a 1/1, that has received +2/+2 until the end of turn, triggers an ability) both players receive priority once more.
Does that really mean that by this time all ”until the end of turn” effects are gone? So Silence would no longer prevent a player from casting spells and stuff like Vines of Vastwood will no longer protect their creatures from interaction?

Interesting to see if I ever will be able to make use of this, but at least it’s in the back of my head!