Vidrik's bolt flies true and deep, causing a deep wound that spurts blue ichor.
Another spider appears in view, this one attempting to bite the apparently unarmored Cassandra. Its pincers close on her neck, injecting poison. She falls to the ground, unconscious and rigid with paralysis.
Spoiler
Attack (1d20+4)[24] for (1d10+2)[5] piercing damage, and (4d8)[25] poison damage, Con DC 11 half.
Cassandra Con save (1d20)[4]+mods
PS1 is in P294:Q295
=>Chloe, Mustafa, Cass, Sabian