Idea is to make a tier II crafters attainable without summoning them through shrine. But not without a risk(?!).
Whenever the wild surge would spawn it would have a chance to be a special surge that would spawn at least one guaranteed tier II crafter thrall acompanioned by unique npcs and/or minions like hyenas, werewolves, undead, or elder races or whatever. Your can make it fit the game lore properly.
On pvp-conflict servers this can also mean players will from time to time fight over it, it can be fun and totally senseful.