Please help Serpent's Spine rank 2 spell drops

Hello,
You can try the Icefall spider camp on the ledge near where Glacier spawns (above the igloos).

The spiders (Icefall crawlers iirc) have a large loot table of 71-74 Rk2 spells and tomes amongst other vendor fodder and was one of the most popular camps when TSS was live.

Good luck and enjoy..