Hint on the number of times a limited each turn trigger has triggered this turn

So testing with [[Nadu, Winged Wisdom]], it would be nice to display somehow how many remaining usage (or number of times the trigger triggered this turn) of a limited-each-turn trigger is there.

Things get even more complex as you can have multiple instances of the trigger, each one with its count tracked independently (ignore the slight incorrect text, that was during development of Nadu) :


I don't think Hint are the way to go here because it is difficult to identify which trigger a hint is referring to (unless we display the Id of such trigger in the rules text?). Would a dynamic rules text with a different text color current count on the trigger make sense?
If we go that way, we could gray out rules for trigger that can not trigger any more this turn. I think that's what happening in mtgo/arena, but haven't check that in a while.

Start with the [[Nadu, Winged Wisdom]] example and the issue's discussion of hints, dynamic rules text, trigger identifiers, and grayed-out rules. Determine how limited-each-turn trigger counts should be presented and how multiple trigger instances remain distinguishable; done means an agreed, testable display behavior, but no file or test is named here.

Written by the indexing model from the issue text.