Dice Re-Roll rulings

Question 1

Dice Re-Roll — ruling 1

Accepted Answer

You activate "Dice Re-Roll" before you activate the effect which will let you roll a die. Then you can use the effect of "Dice Re-Roll" once during the turn in which you activated it. When you resolve the effect, you negate the result of a die roll and roll again.

Question 2

Dice Re-Roll — ruling 2

Accepted Answer

You can use a "Dice Re-Roll" to re-roll a die roll for an Archfiend.

Question 3

Dice Re-Roll — ruling 3

Accepted Answer

You can use a "Dice Re-Roll" to re-roll a die roll during the Damage Step.

Question 4

Dice Re-Roll — ruling 4

Accepted Answer

If you negate "Roulette Barrel"'s die roll, you negate both rolls and must roll twice again.