Minecraft version & Mod Version:
Minecraft 1.16, Mod Version 1.1.10

Single player or Server:
Single Player

Describe problem (what you were doing / what happened):
The runic tablet references dragon's eyes as a rare material, but the item does not show up in the creative inventory or JEI. You can however use the /give command to give it to a player or collect it as intended from chorus flowers.