User:Guy/Splat/Spells/Oil

Oil

2-point conjuration (creation)
Casting time:	action
Range:	60 feet
Components:	V, S
Duration:	concentration, up to 1 minute

You conjure greasy oil to (a) smother a creature in range for the duration, (b) coat a 20-foot square of ground in range that you can see for the duration, or (c) fill an empty container within range for the duration. If you supply 100 grams of silver (or 10 sp) as a material component to be consumed by this spell, the duration becomes permanent and does not require concentration.
 a. The target has advantage on any ability check or saving throw made to escape any grapple, and all other creatures have advantage on any check made to escape the target's grapple. If the target takes fire damage, it becomes ignited for the duration. The effect ends if the creature becomes soaked.
 b. The affected ground becomes difficult terrain. Any creature on the affected ground must succeed on a Dexterity saving throw or fall prone. The first time a creature moves onto affected ground during its turn, it must succeed on a Dexterity save or fall prone. While on the affected ground a creature can't recover from being prone using its movement. If a creature takes fire damage while on the affected ground, that creature takes an extra 1d10 fire damage.
 c. The container fills with up to a liter of oil.