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There seems to be an option there: "artifact grants a spell." Just add all air spells one by one, except for Death Drain and Flight.
And yes, without triggers, you can only determine the current hero by iterating through them. But that doesn't take long; much larger processes occur during the first heroification, and we tolerate it );
Added 2 minutes later
Ah yes, it's unlikely you'll be able to redo the book; you can try using an empty art asset.
There seems to be an option there: "artifact grants a spell." Just add all air spells one by one, except for Death Drain and Flight.
And yes, without triggers, you can only determine the current hero by iterating through them. But that doesn't take long; much larger processes occur during the first heroification, and we tolerate it );
Added 2 minutes later
Ah yes, it's unlikely you'll be able to redo the book; you can try using an empty art asset.