If I'm using Dash Rendar how does the rerolling work? Do I have to choose all the dice I'm re-rolling right away, or can I do it one at a time and therefore possibly re-roll one or more dice I already re-rolled?

Exact wording: "While attacking, you may reroll one die for each enemy squadron or enemy ship at distance 1."

His effect is a single effect, so you calculate how many dice you may roll, then re-roll that or fewer dice.

Collect and roll your attack dice. From that result, you may reroll X dice once. X being the number of squadrons within distance 1.

Yes, the Effects and Timing state that a "While" ability can be used anytime during the event (in this case, attacking), but can only be used once for that Event.


So you may reroll 'x' dice all at one time.