The description of the spell reads as follows:
After a backup failure, a target confused his thoughts for 1 minute. Meanwhile, it rolls a d6 and subtracts the resulting number of all its attack and capacity check rolls, as well as its constitution save rolls to maintain focus.
My question is: does the target roll a d6 roll for each attack / control / save roll, or does it roll d6 at casting time?
One of my players (the wizard who cast the spell) claims that the d6 is cast once when the spell is cast and the result is applied for the duration, while I suspect that the d6 was supposed to be cast every time separately.
The reason for the debate comes from the unusual wording, compared to spells such as hurt:
Whenever a target makes an attack roll or save roll before the spell ends, the target can roll a d4 and add the number to the attack roll or save roll.