For the duration, you can sense the presence and location of poisons, poisonous creatures, and diseases within 30 feet of you. You also identify the kind of poison, poisonous creature, or disease in each case. The spell can penetrate most barriers, but it is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.
Ritual. This spell can be cast as a ritual. The ritual version takes 10 minutes longer to cast and expends no spell slot, so it cannot be cast at a higher level; it requires a feature that grants ritual casting.
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