We spawned multiple surges on official and spawned multiple surges (the best ones) in single player and the outcome on T4 is really, really miserable. Other than T4 fighter and archers its really useless to spent time into farming for it. It even feels like the second best summoned surge gives you a better chance on T3+ crafting thralls.
Can we please, please hotfix something about it? I get that it shouldnt be too easy to get all the thralls like it is on the exile lands but weeks for some T4 workers (if you can even get some im not that sure since i really rarely saw any) is too much.