Agannazar's Mine

Select two 5ft. squares on the ground. An invisible magical sigil that you can see appears on these squares. Any creature that enters either of them must succeed on a Dexterity saving throw or suffer 4d6 fire damage and be struck Prone. The mines can be spotted with a Perception check or a passive Perception score equal to the Difficulty Challenge of the saving throw.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the spell creates one more bomb or the bombs deal an extra die of damage.