There were at least two versions of this spell that differed mainly in duration. The DM has final say on such a curse’s effect. The GM has final say on such a curse’s effect. In 3e it was permanent right away, rather than when you cast it with a higher-level slot.

Bestow Curse can make you "waste" your action doing nothing. If this is your first visit, ... (As by the above sources, it takes a Bestow Greater Curse to remove spellcasting, which you're essentially replicating). 247 School necromancy [curse]; Level adept 3, antipaladin 3, arcanist 4, bloodrager 4, cleric 3, medium 2, mesmerist 3, occultist 3, oracle 3, shaman 3, sorcerer 4, spiritualist 3, warpriest 3, witch 3, wizard 4 Casting Casting Time 1 standard action Components V, S Effect Range touch Target creature touched Duration permanent A remove curse spell ends this effect. A remove curse spell ends this effect. Bestow Curse Source PRPG Core Rulebook pg. At Higher Levels. At the GM's option, you may choose an alternative curse effect, but it should be no more powerful than those described above. The reverse of this spell was remove curse. The older version lasted a few hours at most, whereas the newer version was permanent until removed.
If you cast this spell using a spell slot of 4th level or higher, the duration is concentration, up to 10 minutes. If you cast this spell using a spell slot of 4th level or higher, the duration is concentration, up to 10 minutes. At Higher Levels. If you cast this spell using a spell slot of 4th level or higher, the duration is concentration, up to 10 minutes. A remove curse spell ends this effect. Contrast that with the Incapacitated condition that says an "incapacitated creature can't take actions or reactions", and surprise also prevents taking an … The DM has final say on such a curse's effect. At Higher Levels. At the DM's option, you may choose an alternative curse effect, but it should be no more powerful than those described above. If you cast this spell using a spell slot of 4th level or higher, the duration is concentration, up to 10 minutes. The caster places a curse on the creature touched, choosing one of the following three effects: One ability score is reduced to 1, or two ability scores take -6 penalties (to a minimum score of 1).-8 penalty on attack rolls, saving throws, ability checks, and skill checks.
The GM has final say on such a curse's effect. Bestow curse got nerfed in 5e to behave more like hex, so its presence is something of an artifact of older editions. D&D 3e/3.5e/d20; Bestow Curse ideas. At the DM’s option, you may choose an alternative curse effect, but it should be no more powerful than those described above. Bestow curse was a necromancy or abjuration spell that handicapped a creature. At Higher Levels. At the GM's option, you may choose an alternative curse effect, but it should be no more powerful than those described above.