PROBABILITY CONTROL (optional): Once during your turn, this character allows you to reroll one of your dice (or die) rolls and to ignore the result of the original roll. All dice used in the original roll must be rerolled. A character using this power must be within 10 squares of the character that made the original roll and have a clear line of fire to that character. A character may use this power on itself. In addition, once during your opponent’s turn, this character allows you to force that opponent to reroll one of their one dice (or die) rolls and to ignore the result of the original roll. A character using this power must be within 10 squares of the character that made the original roll and have a clear line of fire to that character. In multiplayer games, this power may be used only once when it is not
your turn.

Ok I know this may seem like a stupid question BUT, please read the above description from Icons. Now looking at this rule on PC it seems that on your opponents turn you can only make them reroll rolls that use a Single die. ie rolls like leadership, invincibility, Shape shift, Super Senses, Support, Regeneration etc.
Can I get some input from some others, Perhaps they ment that the power can only be used once on your opponents turn but if so WHY say "reroll one[/b] of their one dice (or die) rolls"?

My guess is it is a typo that is meant to say "own."

See now a typo there makes more sense than limiting the rolls like that, hence why I wanted to get some more opinions on it.

What this line is referring to is "one of your dice {plural, such as an attack} (or die) {one of your single die rolls} rolls".

The second line means if there were TWO dice involved in the roll, both must be rerolled. If there was only one die in the roll, you reroll that.

yeah I was fine with that, the ony real problem I had was with the "once during your opponent’s turn, this character allows you to force that opponent to reroll one of their one dice (or die) rolls"

I definately think it is a typo and needs to say "own" instead of "one"

the one refers to 1 roll,as in 1 attack roll or 1 support roll,regen,leadership but only once during their turn.
this is what makes rules lawyers such a pain read the what it says don't over think it to much and the rules come out as they were meant to,start looking for ways to twist them and life gets harder for everybody else.

It is a typo because it is not grammatically correct.

I think you're right on what it was supposed to say as well.