Prospector Zeke is a NPC that you will find in every world of the Spiral! He will have a quest for you which involves finding a set of creatures/markings/items! If you find them all during your time in that world, he will reward you with a Training point that you can use to train a spell! These are very useful so make sure you pick up his quest whenever you start a new world!
Below you will find each set (as we arrive in each new world on our adventure) and a video showing you where all of them are! Goodluck wizards and enjoy all of your extra Training Points from Good ol' Zeke!