Nargott
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The teleport spell has already been tested for all purposes, and the results weren't great – it's an ultimate spell for pulling out vulnerable ranged units and immediately destroying them with troops. It was rarely used on one's own troops in that case.
Vampirism – you can enable the option to cast it on the enemy, but what's the point? To break morale and inflict retribution? Oh, I see – to break control.
Yes, I think we should push for a release with an approximate balance, because all the abilities have been distributed qualitatively for a long time. Precise calculations may take time, while there is an interest in trying it out immediately.