vampirism is only mana-based.
Everything else follows logically; a fast, furious wave like a tsunami and a running trident strike should be very dangerous, at least for 1 creature. 1:1 is not a good comparison; if we're going to use that, it should be at least 20-20 / 25-25, otherwise, it seems like the demon blade is overpowered, but in reality, it's far from it and generally not very useful for decent armies.
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