This is a Bestiary Tome Unlock for Cold One.
Kill the 27 champion cold one Coldlash in Saphery, located at 53k, 12k. He is centered in a pack of loose cold ones just off the road.
Talk to Maedlaine Bloodwine in Kyaran's Advance (Dark Elf Ch14) in Saphery. She is located between the mailbox and Trelan Blightblade.