Heliana's Guide to Monster Hunting
3-level Evocation
With a boom that can be heard 300 feet away (or 1000 feet in a liquid), a pulse of thunder ripples out from a point you choose within range. Each creature in a 20-foot-radius sphere centred on that point must make a Constitution saving throw. A target takes 7d6 thunder damage on a failed save, or half as much damage on a successful one. This damage increases to 9d6 if the affected creature is submerged in a liquid.
If you touch a body of water when casting this spell, you can choose a point within 90 feet of you that is in the same body of water. The spell is cast as if you were at the chosen point, but you must use your own senses.
When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.
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