Oilwell

2nd-level Conjuration
Casting Time: 1 action
Range: 120 Feet
Components: V, S, M (A dowsing rod)
Duration: Concentration, up to 1 minute.
A geyser of oil erupts from the ground in a 5 foot radius, 20 foot high cylinder. The cylinder creates difficult terrain in the area of the spell.
When a creature enters the spell's area for the first time or starts its turn there, the oil drenches and clings to the target, and it must make a Dexterity saving throw. It takes 2d8 poison damage on a failed save, or half as much on a successful one.
On each turn after you cast this spell, you may use your action to cause the oilwell to move to a different space within 30 feet.
If the area of this spell overlaps with an area affected by a spell that ignites objects, such as Firebolt or Fireball, all creatures within the area must make a dexterity saving throw. On a failed save, creatures take 1d6 fire damage, or half as much on a successful save.
At Higher Levels: When you cast this spell using a slot of 3rd level or higher, the damage increases by 1d8 for each spell slot level above 2nd.
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