Dead Sense

When cast, choose a creature within range that has a functional nervous system, and curse them.  

When cast, the target must succeed on a Wisdom Save-And-Throw and on a failed save, they lose one of their 5 senses of the casters choice, for the duration of the spell.  The target creature will have advantage on the Save-And-Throw if they are resistant to necrotic damage.  The spell will not function, and waste the spell-slot used, if the target is immune to necrotic damage.

When cast with a higher level spell-slot, the caster has three choices to pick from, and they may NOT choose more than one.

1.  Take away another sense of their choosing.  Once the target has lost all of its senses, they take an additional 1d8 psychic damage for each spell slot used up to 8th level.

2.  Extend the duration of the spell by another minute, to a maximum of 7 minutes for each spell-slot used.  

3.  Choose 1 additional target for each spell-slot used above 2nd, with every additional target sharing the same loss-of-sense as the original target.

When using a 9th level spell-slot, the spell takes away all of the targets senses and extend the duration of the curse to 30 minutes.  Still may only target one creature when used this way.

The curse can be removed with a Remove Curse spell, unless the spell was cast with a 9th level spell slot, in which case only a wish spell may undue the effects.

When cast with a 9th level spell-slot, the caster MUST use the material components and the target creature must succeed with a 50 or higher on a d100 dice.  Should they succeed the save and throw, the caster suffers backlash from the incredible magics used in the casting, forcing them to take 6d10 psychic damage, and lose all 5 of their senses for 1d4+1 hours.