Last event Wrath took some of the water from the rattling (arena) where it was super powerful in a jar to study later/when it was safer/could probably ward the place where he was experimenting. Is there anything additional that can be learned from that water by studying it? Does it lose some of its potency over time now that it's away from the hand/the rest of the dark water? He would try probably putting a drop on this shard he received back in the day, etc.