Anyone who falls afoul of this spider’s poison has thick clouds of oily liquid blind them with flowing inkblot images over each eye.

Inkblot Spider
Beast
Attributes
Unorganized
Size
Tiny
Type
Beast
AC
13
HP
2
Speed
30ft, Climb 30ft
CR
1/4
Ability Scores
STR
4
DEX
16
CON
10
INT
1
WIS
10
CHA
2
Traits
Spider Climb
The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Web Walker
The spider ignores movement restrictions caused by webbing.
Actions
Bite
Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 1 piercing damage, and the target must succeed on a DC 10 Constitution saving throw. On a failure, the target takes 3 (1d6) poison damage and becomes poisoned and blinded for 1 minute. A creature can repeat the saving throw at the beginning of each of its turns to avoid.
being blinded for 1 round. The blindness ends if
the creature removes the poisoned condition.
being blinded for 1 round. The blindness ends if
the creature removes the poisoned condition.