I was playing Beneath Tcotzac and inadvertently discovered that the Curse Idol's armor card, Ancient Statue, even though it states Electrical Immunity, it took damage from a buffed Deadly Spark anyways, as if it was a normal attack type which causes a roll. Tested and it does have Fire damage immunity.
Now , if the ancient Tcotzacians draped a little zombie skin over those statues, they would have been fine. But nope, they got electrocuted into oblivion.