Maledictions w/ No die roll required - is this legal?

[PK]

For a beneficial Affliction, the combination of Cosmic (NDRR) and Fixed Duration will accomplish the result of, "I use my ability and it buffs my friend for X minutes," yes.

But just to be clear, for a standard, hostile Affliction, the combination of the two means that if the attacker either fails his roll or declines to roll, his MOS is treated as 0, which means that the victim is very likely to defend successfully against it. If the victim still manages to fail, the ability afflicts him for a fixed duration of X minutes, regardless of the actual margin of victory.