Wicc
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Everything is correct, I'm just saying to reduce its frequency of appearance and add some kind of artifact that suppresses the sphere's effect, so it won't affect everything you mentioned. This would add more variety to the game, and it would also be beneficial for mages to use the sphere (to save their spells and avoid casting expensive spells like those of wizards, sorcerers, djinns, and elementals...).
Artifacts that compensate will only create more controversy. It's easier to just ban it.
Reduce it in the Warlord's Trials, and add it to the Conflux of Souls if anything. IMHO.
