QI use center holomem hBP02-047〈Murasaki Shion〉's bloom effect "Mischief Magic" and rolled a die once.
Then I used hBP02-005〈Murasaki Shion〉's Oshi skill "Heeeyyyyy" and rerolled once.
In this case, if I used my collab position's hBP04-059〈La+ Darknesss〉's Arts "Legend of My Supremacy", how many times of "each time a die was rolled" will be counted?

ASince the previous result was ignored by the ability of hBP02-005〈Murasaki Shion〉, only 1 roll is counted.

QI used the Arts "Operation: Bunnify Humanity" of hBP01-043〈Usada Pekora〉in the center position with hBP01-123〈Wild Rabbit Alliance〉attached, and rolled a die 3 times.
After that, I used the ability of hBP01-123〈Wild Rabbit Alliance〉and rerolled the die 3 times.
In this case, how many times of "a die was rolled" will be counted by the Arts "Legend of My Supremacy" of hBP04-059〈La+ Darknesss〉in the collab position?

ASince the previous results were ignored by the ability of hBP01-123〈Wild Rabbit Alliance〉, it will be counted "3 times".

QI used the Arts "Operation: Bunnify Humanity" of hBP01-043〈Usada Pekora〉, and rolled a die 3 times.
In this case, how many times of "a die was rolled" will be counted by the Arts "Legend of My Supremacy" of hBP04-059〈La+ Darknesss〉in the collab position?

ASince it counts "each time a die was rolled by your abilities this turn", it would be counted "3 times" for the Arts "Operation: Bunnify Humanity" of hBP01-043〈Usada Pekora〉.

QDuring my main phase, I used hBP02-084〈Mikkorone 24〉and hSD01-020〈Circle of hololive Listeners〉, and rolled 1 die for each of them.
After, I used the Arts "Legend of My Supremacy" of hBP04-059〈La+ Darknesss〉, how many times "a die was rolled" would be counted by the ability?

AThey were rolled by an ability, even if they are from support cards, so it would be counted "2 times".